83523290 has 16 divisors (see below), whose sum is σ = 150596712. Its totient is φ = 33352704.

The previous prime is 83523287. The next prime is 83523317. The reversal of 83523290 is 9232538.

It can be written as a sum of positive squares in 4 ways, for example, as 67354849 + 16168441 = 8207^2 + 4021^2 .

It is a super-2 number, since 2×83523290² = 13952279944848200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 599 + ... + 12938.

Almost surely, 2^83523290 is an apocalyptic number.

83523290 is a deficient number, since it is larger than the sum of its proper divisors (67073422).

83523290 is a wasteful number, since it uses less digits than its factorization.

83523290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14161.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 83523290 is about 9139.1077244991. The cubic root of 83523290 is about 437.1218653783.

The spelling of 83523290 in words is "eighty-three million, five hundred twenty-three thousand, two hundred ninety".