90253518 has 16 divisors (see below), whose sum is σ = 188355456. Its totient is φ = 28776440.

The previous prime is 90253507. The next prime is 90253519. The reversal of 90253518 is 81535209.

It is a super-2 number, since 2×90253518² = 16291395022752648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90253519) 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, 326868 + ... + 327143.

It is an arithmetic number, because the mean of its divisors is an integer number (11772216).

Almost surely, 2^90253518 is an apocalyptic number.

90253518 is an abundant number, since it is smaller than the sum of its proper divisors (98101938).

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

90253518 is a wasteful number, since it uses less digits than its factorization.

90253518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654039.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 90253518 is about 9500.1851560904. The cubic root of 90253518 is about 448.5608641637.

The spelling of 90253518 in words is "ninety million, two hundred fifty-three thousand, five hundred eighteen".