16172490 has 32 divisors (see below), whose sum is σ = 39476160. Its totient is φ = 4239104.

The previous prime is 16172489. The next prime is 16172501. The reversal of 16172490 is 9427161.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 2799 + ... + 6338.

It is an arithmetic number, because the mean of its divisors is an integer number (1233630).

Almost surely, 2^16172490 is an apocalyptic number.

16172490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16172490 is an abundant number, since it is smaller than the sum of its proper divisors (23303670).

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

16172490 is a wasteful number, since it uses less digits than its factorization.

16172490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9206.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 16172490 is about 4021.5034502037. The cubic root of 16172490 is about 252.8864910783.

The spelling of 16172490 in words is "sixteen million, one hundred seventy-two thousand, four hundred ninety".