16402920 has 32 divisors (see below), whose sum is σ = 49209120. Its totient is φ = 4374080.

The previous prime is 16402879. The next prime is 16402931. The reversal of 16402920 is 2920461.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68226 + ... + 68465.

It is an arithmetic number, because the mean of its divisors is an integer number (1537785).

Almost surely, 2^16402920 is an apocalyptic number.

16402920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16402920 is an abundant number, since it is smaller than the sum of its proper divisors (32806200).

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

16402920 is a wasteful number, since it uses less digits than its factorization.

16402920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136705 (or 136701 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 16402920 is about 4050.0518515199. The cubic root of 16402920 is about 254.0818964221.

It can be divided in two parts, 1640 and 2920, that added together give a triangular number (4560 = T₉₅).

The spelling of 16402920 in words is "sixteen million, four hundred two thousand, nine hundred twenty".