90179072 has 40 divisors (see below), whose sum is σ = 182298600. Its totient is φ = 44560384.

The previous prime is 90179071. The next prime is 90179083. The reversal of 90179072 is 27097109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90179071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44579 + ... + 46557.

It is an arithmetic number, because the mean of its divisors is an integer number (4557465).

Almost surely, 2^90179072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90179072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91149300).

90179072 is an abundant number, since it is smaller than the sum of its proper divisors (92119528).

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

90179072 is an equidigital number, since it uses as much as digits as its factorization.

90179072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086 (or 2070 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 35.

The square root of 90179072 is about 9496.2662136231. The cubic root of 90179072 is about 448.4374977892.

The spelling of 90179072 in words is "ninety million, one hundred seventy-nine thousand, seventy-two".