39290472 has 72 divisors (see below), whose sum is σ = 115262550. Its totient is φ = 12085632.

The previous prime is 39290443. The next prime is 39290473. The reversal of 39290472 is 27409293.

It can be written as a sum of positive squares in 3 ways, for example, as 15729156 + 23561316 = 3966^2 + 4854^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (39290473) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10554 + ... + 13782.

Almost surely, 2^39290472 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 39290472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57631275).

39290472 is an abundant number, since it is smaller than the sum of its proper divisors (75972078).

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

39290472 is a wasteful number, since it uses less digits than its factorization.

39290472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3267 (or 3247 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 39290472 is about 6268.2112280937. The cubic root of 39290472 is about 339.9609874499.

The spelling of 39290472 in words is "thirty-nine million, two hundred ninety thousand, four hundred seventy-two".