90284636 has 24 divisors (see below), whose sum is σ = 172947264. Its totient is φ = 40985280.

The previous prime is 90284629. The next prime is 90284639. The reversal of 90284636 is 63648209.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 90284636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90284639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11060 + ... + 17403.

It is an arithmetic number, because the mean of its divisors is an integer number (7206136).

Almost surely, 2^90284636 is an apocalyptic number.

It is an amenable number.

90284636 is a deficient number, since it is larger than the sum of its proper divisors (82662628).

90284636 is a wasteful number, since it uses less digits than its factorization.

90284636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28541 (or 28539 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 90284636 is about 9501.8227725000. The cubic root of 90284636 is about 448.6124104945.

The spelling of 90284636 in words is "ninety million, two hundred eighty-four thousand, six hundred thirty-six".