392697216 has 96 divisors (see below), whose sum is σ = 1179238320. Its totient is φ = 125199360.

The previous prime is 392697197. The next prime is 392697233. The reversal of 392697216 is 612796293.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×392697216² = 308422206908301312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19086 + ... + 33906.

Almost surely, 2^392697216 is an apocalyptic number.

392697216 is a gapful number since it is divisible by the number (36) 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 392697216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (589619160).

392697216 is an abundant number, since it is smaller than the sum of its proper divisors (786541104).

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

392697216 is a wasteful number, since it uses less digits than its factorization.

392697216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14864 (or 14849 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 392697216 is about 19816.5894139229. The cubic root of 392697216 is about 732.2947840753.

The spelling of 392697216 in words is "three hundred ninety-two million, six hundred ninety-seven thousand, two hundred sixteen".