83490730 has 16 divisors (see below), whose sum is σ = 151664040. Its totient is φ = 33089472.

The previous prime is 83490721. The next prime is 83490773. The reversal of 83490730 is 3709438.

It can be written as a sum of positive squares in 4 ways, for example, as 82464561 + 1026169 = 9081^2 + 1013^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37209 + ... + 39388.

Almost surely, 2^83490730 is an apocalyptic number.

83490730 is a deficient number, since it is larger than the sum of its proper divisors (68173310).

83490730 is a wasteful number, since it uses less digits than its factorization.

83490730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76713.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 83490730 is about 9137.3261953375. The cubic root of 83490730 is about 437.0650567214.

The spelling of 83490730 in words is "eighty-three million, four hundred ninety thousand, seven hundred thirty".