39028290 has 32 divisors (see below), whose sum is σ = 107049600. Its totient is φ = 8920704.

The previous prime is 39028271. The next prime is 39028313. The reversal of 39028290 is 9282093.

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, 92715 + ... + 93134.

It is an arithmetic number, because the mean of its divisors is an integer number (3345300).

Almost surely, 2^39028290 is an apocalyptic number.

39028290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

39028290 is an abundant number, since it is smaller than the sum of its proper divisors (68021310).

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

39028290 is a wasteful number, since it uses less digits than its factorization.

39028290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185866.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 39028290 is about 6247.2626005315. The cubic root of 39028290 is about 339.2031222364.

It can be divided in two parts, 390 and 28290, that added together give a triangular number (28680 = T₂₃₉).

The spelling of 39028290 in words is "thirty-nine million, twenty-eight thousand, two hundred ninety".