39320144 has 10 divisors (see below), whose sum is σ = 76182810. Its totient is φ = 19660064.

The previous prime is 39320129. The next prime is 39320207. The reversal of 39320144 is 44102393.

It can be written as a sum of positive squares in only one way, i.e., 24880144 + 14440000 = 4988^2 + 3800^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1228739 + ... + 1228770.

It is an arithmetic number, because the mean of its divisors is an integer number (7618281).

Almost surely, 2^39320144 is an apocalyptic number.

It is an amenable number.

39320144 is a deficient number, since it is larger than the sum of its proper divisors (36862666).

39320144 is a wasteful number, since it uses less digits than its factorization.

39320144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2457517 (or 2457511 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 39320144 is about 6270.5776448426. The cubic root of 39320144 is about 340.0465449543.

The spelling of 39320144 in words is "thirty-nine million, three hundred twenty thousand, one hundred forty-four".