90744156 has 18 divisors (see below), whose sum is σ = 229381152. Its totient is φ = 30248040.

The previous prime is 90744107. The next prime is 90744163. The reversal of 90744156 is 65144709.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2520671 = 90744156 / (9 + 0 + 7 + 4 + 4 + 1 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 90744156.

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 5 ways as a sum of consecutive naturals, for example, 1260300 + ... + 1260371.

Almost surely, 2^90744156 is an apocalyptic number.

It is an amenable number.

90744156 is an abundant number, since it is smaller than the sum of its proper divisors (138636996).

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

90744156 is a wasteful number, since it uses less digits than its factorization.

90744156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2520681 (or 2520676 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 90744156 is about 9525.9727062385. The cubic root of 90744156 is about 449.3722209111.

The spelling of 90744156 in words is "ninety million, seven hundred forty-four thousand, one hundred fifty-six".