90902830 has 16 divisors (see below), whose sum is σ = 163962000. Its totient is φ = 36286272.

The previous prime is 90902827. The next prime is 90902869. The reversal of 90902830 is 3820909.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 90902792 and 90902801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4119 + ... + 14098.

It is an arithmetic number, because the mean of its divisors is an integer number (10247625).

Almost surely, 2^90902830 is an apocalyptic number.

90902830 is a deficient number, since it is larger than the sum of its proper divisors (73059170).

90902830 is a wasteful number, since it uses less digits than its factorization.

90902830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18723.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 90902830 is about 9534.2975619602. The cubic root of 90902830 is about 449.6339904510.

The spelling of 90902830 in words is "ninety million, nine hundred two thousand, eight hundred thirty".