16402365 has 64 divisors (see below), whose sum is σ = 35320320. Its totient is φ = 7050240.

The previous prime is 16402333. The next prime is 16402369. The reversal of 16402365 is 56320461.

It is not a de Polignac number, because 16402365 - 2⁵ = 16402333 is a prime.

It is a hoax number, since the sum of its digits (27) 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 (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16402369) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15555 + ... + 16575.

It is an arithmetic number, because the mean of its divisors is an integer number (551880).

Almost surely, 2^16402365 is an apocalyptic number.

16402365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16402365 is an abundant number, since it is smaller than the sum of its proper divisors (18917955).

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

16402365 is a wasteful number, since it uses less digits than its factorization.

16402365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059 (or 1053 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 16402365 is about 4049.9833332990. The cubic root of 16402365 is about 254.0790307322.

It can be divided in two parts, 1640 and 2365, that added together give a triangular number (4005 = T₈₉).

The spelling of 16402365 in words is "sixteen million, four hundred two thousand, three hundred sixty-five".