90309536 has 24 divisors (see below), whose sum is σ = 178036740. Its totient is φ = 45093888.

The previous prime is 90309533. The next prime is 90309553. The reversal of 90309536 is 63590309.

It can be written as a sum of positive squares in 2 ways, for example, as 90250000 + 59536 = 9500^2 + 244^2 .

It is a junction number, because it is equal to n+sod(n) for n = 90309496 and 90309505.

It is not an unprimeable number, because it can be changed into a prime (90309533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30890 + ... + 33686.

Almost surely, 2^90309536 is an apocalyptic number.

It is an amenable number.

90309536 is a deficient number, since it is larger than the sum of its proper divisors (87727204).

90309536 is a wasteful number, since it uses less digits than its factorization.

90309536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3816 (or 3808 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 35.

The square root of 90309536 is about 9503.1329570832. The cubic root of 90309536 is about 448.6536483055.

The spelling of 90309536 in words is "ninety million, three hundred nine thousand, five hundred thirty-six".