16640982 has 12 divisors (see below), whose sum is σ = 36055500. Its totient is φ = 5546988.

The previous prime is 16640969. The next prime is 16640999. The reversal of 16640982 is 28904661.

16640982 is a `hidden beast` number, since 1 + 6 + 640 + 9 + 8 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 462232 + ... + 462267.

It is an arithmetic number, because the mean of its divisors is an integer number (3004625).

Almost surely, 2^16640982 is an apocalyptic number.

16640982 is an abundant number, since it is smaller than the sum of its proper divisors (19414518).

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

16640982 is a wasteful number, since it uses less digits than its factorization.

16640982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924507 (or 924504 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 16640982 is about 4079.3359753764. The cubic root of 16640982 is about 255.3051939864.

It can be divided in two parts, 1664098 and 2, that added together give a square (1664100 = 1290²).

The spelling of 16640982 in words is "sixteen million, six hundred forty thousand, nine hundred eighty-two".