15055640 has 32 divisors (see below), whose sum is σ = 35046000. Its totient is φ = 5814144.

The previous prime is 15055631. The next prime is 15055643. The reversal of 15055640 is 4655051.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15055643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5330 + ... + 7649.

Almost surely, 2^15055640 is an apocalyptic number.

15055640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15055640 is an abundant number, since it is smaller than the sum of its proper divisors (19990360).

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

15055640 is a wasteful number, since it uses less digits than its factorization.

15055640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13019 (or 13015 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 15055640 is about 3880.1597905241. The cubic root of 15055640 is about 246.9257645967.

The spelling of 15055640 in words is "fifteen million, fifty-five thousand, six hundred forty".