68490288 has 60 divisors (see below), whose sum is σ = 201774040. Its totient is φ = 21627648.

The previous prime is 68490287. The next prime is 68490299. The reversal of 68490288 is 88209486.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68490287) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9781 + ... + 15252.

Almost surely, 2^68490288 is an apocalyptic number.

It is an amenable number.

68490288 is an abundant number, since it is smaller than the sum of its proper divisors (133283752).

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

68490288 is a wasteful number, since it uses less digits than its factorization.

68490288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25066 (or 25057 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 68490288 is about 8275.8859344483. The cubic root of 68490288 is about 409.1441357276.

The spelling of 68490288 in words is "sixty-eight million, four hundred ninety thousand, two hundred eighty-eight".