16497720 has 48 divisors (see below), whose sum is σ = 53618760. Its totient is φ = 4399296.

The previous prime is 16497713. The next prime is 16497731. The reversal of 16497720 is 2779461.

It is a happy number.

16497720 is a `hidden beast` number, since 1 + 649 + 7 + 7 + 2 + 0 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22554 + ... + 23273.

Almost surely, 2^16497720 is an apocalyptic number.

16497720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16497720 is an abundant number, since it is smaller than the sum of its proper divisors (37121040).

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

16497720 is a wasteful number, since it uses less digits than its factorization.

16497720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45844 (or 45837 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 16497720 is about 4061.7385440227. The cubic root of 16497720 is about 254.5704417338.

The spelling of 16497720 in words is "sixteen million, four hundred ninety-seven thousand, seven hundred twenty".