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118369420 = 225131972311
BaseRepresentation
bin1110000111000…
…10110010001100
322020201210022121
413003202302030
5220300310140
615425022324
72635060231
oct703426214
9266653277
10118369420
11608a8774
12337849a4
131b6a59a0
1411a13788
15a5d264a
hex70e2c8c

118369420 has 48 divisors (see below), whose sum is σ = 269172288. Its totient is φ = 43464960.

The previous prime is 118369417. The next prime is 118369423. The reversal of 118369420 is 24963811.

It is an interprime number because it is at equal distance from previous prime (118369417) and next prime (118369423).

It is a super-2 number, since 2×1183694202 = 28022639182272800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (118369423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50065 + ... + 52375.

It is an arithmetic number, because the mean of its divisors is an integer number (5607756).

Almost surely, 2118369420 is an apocalyptic number.

118369420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118369420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134586144).

118369420 is an abundant number, since it is smaller than the sum of its proper divisors (150802868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

118369420 is a wasteful number, since it uses less digits than its factorization.

118369420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2530 (or 2528 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 118369420 is about 10879.7711372988. The cubic root of 118369420 is about 490.9981320177.

The spelling of 118369420 in words is "one hundred eighteen million, three hundred sixty-nine thousand, four hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 197 260 394 788 985 1970 2311 2561 3940 4622 5122 9244 10244 11555 12805 23110 25610 30043 46220 51220 60086 120172 150215 300430 455267 600860 910534 1821068 2276335 4552670 5918471 9105340 11836942 23673884 29592355 59184710 118369420