16220365 has 16 divisors (see below), whose sum is σ = 22580352. Its totient is φ = 10954944.

The previous prime is 16220287. The next prime is 16220371. The reversal of 16220365 is 56302261.

It is not a de Polignac number, because 16220365 - 2¹³ = 16212173 is a prime.

It is a Duffinian number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1114 + ... + 5803.

It is an arithmetic number, because the mean of its divisors is an integer number (1411272).

Almost surely, 2^16220365 is an apocalyptic number.

It is an amenable number.

16220365 is a deficient number, since it is larger than the sum of its proper divisors (6359987).

16220365 is an equidigital number, since it uses as much as digits as its factorization.

16220365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6996.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 16220365 is about 4027.4514273918. The cubic root of 16220365 is about 253.1357830086.

It can be divided in two parts, 16 and 220365, that multiplied together give a triangular number (3525840 = T₂₆₅₅).

The spelling of 16220365 in words is "sixteen million, two hundred twenty thousand, three hundred sixty-five".