16812490 has 16 divisors (see below), whose sum is σ = 32042952. Its totient is φ = 6329344.

The previous prime is 16812469. The next prime is 16812529. The reversal of 16812490 is 9421861.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15062161 + 1750329 = 3881^2 + 1323^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49279 + ... + 49618.

Almost surely, 2^16812490 is an apocalyptic number.

16812490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16812490 is a deficient number, since it is larger than the sum of its proper divisors (15230462).

16812490 is a wasteful number, since it uses less digits than its factorization.

16812490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98921.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 16812490 is about 4100.3036472925. The cubic root of 16812490 is about 256.1792872503.

The spelling of 16812490 in words is "sixteen million, eight hundred twelve thousand, four hundred ninety".