15655420 has 24 divisors (see below), whose sum is σ = 35865648. Its totient is φ = 5692800.

The previous prime is 15655379. The next prime is 15655427. The reversal of 15655420 is 2455651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15655427) 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, 35361 + ... + 35800.

It is an arithmetic number, because the mean of its divisors is an integer number (1494402).

Almost surely, 2^15655420 is an apocalyptic number.

15655420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15655420 is an abundant number, since it is smaller than the sum of its proper divisors (20210228).

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

15655420 is a wasteful number, since it uses less digits than its factorization.

15655420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71181 (or 71179 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 15655420 is about 3956.6930636581. The cubic root of 15655420 is about 250.1621348265.

The spelling of 15655420 in words is "fifteen million, six hundred fifty-five thousand, four hundred twenty".