39390288 has 80 divisors (see below), whose sum is σ = 118325760. Its totient is φ = 11058048.

The previous prime is 39390271. The next prime is 39390293. The reversal of 39390288 is 88209393.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18831 + ... + 20817.

It is an arithmetic number, because the mean of its divisors is an integer number (1479072).

Almost surely, 2^39390288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39390288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59162880).

39390288 is an abundant number, since it is smaller than the sum of its proper divisors (78935472).

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

39390288 is a wasteful number, since it uses less digits than its factorization.

39390288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2064 (or 2058 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 39390288 is about 6276.1682577828. The cubic root of 39390288 is about 340.2486301365.

The spelling of 39390288 in words is "thirty-nine million, three hundred ninety thousand, two hundred eighty-eight".