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13372020 = 2233524763
BaseRepresentation
bin110011000000…
…101001110100
3221011100222000
4303000221310
511410401040
61154335300
7221442324
oct63005164
927140860
1013372020
117603662
12458a530
132a0264c
141ac1284
151292130
hexcc0a74

13372020 has 48 divisors (see below), whose sum is σ = 41603520. Its totient is φ = 3565728.

The previous prime is 13372003. The next prime is 13372043. The reversal of 13372020 is 2027331.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13371984 and 13372002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11842 + ... + 12921.

It is an arithmetic number, because the mean of its divisors is an integer number (866740).

Almost surely, 213372020 is an apocalyptic number.

13372020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13372020 is an abundant number, since it is smaller than the sum of its proper divisors (28231500).

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

13372020 is a wasteful number, since it uses less digits than its factorization.

13372020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24781 (or 24773 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 13372020 is about 3656.7772696734. Note that the first 3 decimals coincide. The cubic root of 13372020 is about 237.3553394217.

Adding to 13372020 its reverse (2027331), we get a palindrome (15399351).

The spelling of 13372020 in words is "thirteen million, three hundred seventy-two thousand, twenty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 90 108 135 180 270 540 24763 49526 74289 99052 123815 148578 222867 247630 297156 371445 445734 495260 668601 742890 891468 1114335 1337202 1485780 2228670 2674404 3343005 4457340 6686010 13372020