90539428 has 24 divisors (see below), whose sum is σ = 182000000. Its totient is φ = 38605248.

The previous prime is 90539419. The next prime is 90539429. The reversal of 90539428 is 82493509.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (90539429) 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, 2553 + ... + 13696.

Almost surely, 2^90539428 is an apocalyptic number.

It is an amenable number.

90539428 is an abundant number, since it is smaller than the sum of its proper divisors (91460572).

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

90539428 is a wasteful number, since it uses less digits than its factorization.

90539428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16459 (or 16457 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 90539428 is about 9515.2208592339. The cubic root of 90539428 is about 449.0340233773.

It can be divided in two parts, 9053 and 9428, that added together give a palindrome (18481).

The spelling of 90539428 in words is "ninety million, five hundred thirty-nine thousand, four hundred twenty-eight".