90355072 has 16 divisors (see below), whose sum is σ = 180004500. Its totient is φ = 45177472.

The previous prime is 90355037. The next prime is 90355081. The reversal of 90355072 is 27055309.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×90355072² = 16328078072250368, which contains 22 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 352822 + ... + 353077.

Almost surely, 2^90355072 is an apocalyptic number.

It is an amenable number.

90355072 is a deficient number, since it is larger than the sum of its proper divisors (89649428).

90355072 is an equidigital number, since it uses as much as digits as its factorization.

90355072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705913 (or 705901 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 90355072 is about 9505.5284966171. The cubic root of 90355072 is about 448.7290425575.

The spelling of 90355072 in words is "ninety million, three hundred fifty-five thousand, seventy-two".