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15164140 = 2251017507
BaseRepresentation
bin111001110110…
…001011101100
31001112102021211
4321312023230
512340223030
61301004204
7242615215
oct71661354
931472254
1015164140
118618052
1250b3664
1331ac284
14202a40c
1514e812a
hexe762ec

15164140 has 24 divisors (see below), whose sum is σ = 32164272. Its totient is φ = 6004800.

The previous prime is 15164099. The next prime is 15164141. The reversal of 15164140 is 4146151.

It is a super-2 number, since 2×151641402 = 459902283879200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15164141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1734 + ... + 5773.

It is an arithmetic number, because the mean of its divisors is an integer number (1340178).

Almost surely, 215164140 is an apocalyptic number.

15164140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15164140 is an abundant number, since it is smaller than the sum of its proper divisors (17000132).

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

15164140 is a wasteful number, since it uses less digits than its factorization.

15164140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7617 (or 7615 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 15164140 is about 3894.1160742844. The cubic root of 15164140 is about 247.5175105796.

The spelling of 15164140 in words is "fifteen million, one hundred sixty-four thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 101 202 404 505 1010 2020 7507 15014 30028 37535 75070 150140 758207 1516414 3032828 3791035 7582070 15164140