90425240 has 16 divisors (see below), whose sum is σ = 203456880. Its totient is φ = 36170080.

The previous prime is 90425221. The next prime is 90425267. The reversal of 90425240 is 4252409.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1130276 + ... + 1130355.

It is an arithmetic number, because the mean of its divisors is an integer number (12716055).

Almost surely, 2^90425240 is an apocalyptic number.

It is an amenable number.

90425240 is an abundant number, since it is smaller than the sum of its proper divisors (113031640).

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

90425240 is a wasteful number, since it uses less digits than its factorization.

90425240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260642 (or 2260638 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 90425240 is about 9509.2186850445. The cubic root of 90425240 is about 448.8451705981.

Adding to 90425240 its reverse (4252409), we get a palindrome (94677649).

The spelling of 90425240 in words is "ninety million, four hundred twenty-five thousand, two hundred forty".