16369920 has 324 divisors, whose sum is σ = 68157180. Its totient is φ = 3612672.

The previous prime is 16369907. The next prime is 16369931. The reversal of 16369920 is 2996361.

It can be written as a sum of positive squares in 2 ways, for example, as 7225344 + 9144576 = 2688^2 + 3024^2 .

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 35 ways as a sum of consecutive naturals, for example, 564466 + ... + 564494.

Almost surely, 2^16369920 is an apocalyptic number.

16369920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16369920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34078590).

16369920 is an abundant number, since it is smaller than the sum of its proper divisors (51787260).

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

16369920 is a wasteful number, since it uses less digits than its factorization.

16369920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 16369920 is about 4045.9757784742. The cubic root of 16369920 is about 253.9113915819.

The spelling of 16369920 in words is "sixteen million, three hundred sixty-nine thousand, nine hundred twenty".