392247072 has 144 divisors (see below), whose sum is σ = 1287861120. Its totient is φ = 110923776.

The previous prime is 392247059. The next prime is 392247133. The reversal of 392247072 is 270742293.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 23 ways as a sum of consecutive naturals, for example, 206704 + ... + 208592.

It is an arithmetic number, because the mean of its divisors is an integer number (8943480).

Almost surely, 2^392247072 is an apocalyptic number.

392247072 is a gapful number since it is divisible by the number (32) 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 392247072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (643930560).

392247072 is an abundant number, since it is smaller than the sum of its proper divisors (895614048).

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

392247072 is a wasteful number, since it uses less digits than its factorization.

392247072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015 (or 2004 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 392247072 is about 19805.2284006017. The cubic root of 392247072 is about 732.0148702524.

The spelling of 392247072 in words is "three hundred ninety-two million, two hundred forty-seven thousand, seventy-two".