90780832 has 24 divisors (see below), whose sum is σ = 183557556. Its totient is φ = 44163072.

The previous prime is 90780797. The next prime is 90780887. The reversal of 90780832 is 23808709.

It can be written as a sum of positive squares in 2 ways, for example, as 90554256 + 226576 = 9516^2 + 476^2 .

It is a super-2 number, since 2×90780832² = 16482318917224448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 90780791 and 90780800.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37153 + ... + 39520.

Almost surely, 2^90780832 is an apocalyptic number.

It is an amenable number.

90780832 is an abundant number, since it is smaller than the sum of its proper divisors (92776724).

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

90780832 is a wasteful number, since it uses less digits than its factorization.

90780832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76720 (or 76712 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 90780832 is about 9527.8975645207. The cubic root of 90780832 is about 449.4327535721.

The spelling of 90780832 in words is "ninety million, seven hundred eighty thousand, eight hundred thirty-two".