90377520 has 40 divisors (see below), whose sum is σ = 280171056. Its totient is φ = 24100608.

The previous prime is 90377479. The next prime is 90377549. The reversal of 90377520 is 2577309.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×90377520² = 16336192242700800, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 188047 + ... + 188526.

Almost surely, 2^90377520 is an apocalyptic number.

It is an amenable number.

90377520 is an abundant number, since it is smaller than the sum of its proper divisors (189793536).

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

90377520 is a wasteful number, since it uses less digits than its factorization.

90377520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376589 (or 376583 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 33.

The square root of 90377520 is about 9506.7092098160. The cubic root of 90377520 is about 448.7662005361.

The spelling of 90377520 in words is "ninety million, three hundred seventy-seven thousand, five hundred twenty".