16640652 has 48 divisors (see below), whose sum is σ = 44576000. Its totient is φ = 4732992.

The previous prime is 16640651. The next prime is 16640681. The reversal of 16640652 is 25604661.

It is a super-2 number, since 2×16640652² = 553822597970208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16640651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33099 + ... + 33597.

Almost surely, 2^16640652 is an apocalyptic number.

16640652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16640652 is an abundant number, since it is smaller than the sum of its proper divisors (27935348).

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

16640652 is a wasteful number, since it uses less digits than its factorization.

16640652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910 (or 908 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 16640652 is about 4079.2955274165. The cubic root of 16640652 is about 255.3035063602.

The spelling of 16640652 in words is "sixteen million, six hundred forty thousand, six hundred fifty-two".