90568240 has 40 divisors (see below), whose sum is σ = 240654240. Its totient is φ = 31051776.

The previous prime is 90568223. The next prime is 90568259. The reversal of 90568240 is 4286509.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 90568196 and 90568205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80305 + ... + 81424.

It is an arithmetic number, because the mean of its divisors is an integer number (6016356).

Almost surely, 2^90568240 is an apocalyptic number.

It is an amenable number.

90568240 is an abundant number, since it is smaller than the sum of its proper divisors (150086000).

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

90568240 is a wasteful number, since it uses less digits than its factorization.

90568240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161749 (or 161743 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 90568240 is about 9516.7347341407. The cubic root of 90568240 is about 449.0816497594.

The spelling of 90568240 in words is "ninety million, five hundred sixty-eight thousand, two hundred forty".