68202540 has 96 divisors (see below), whose sum is σ = 242511360. Its totient is φ = 15588288.

The previous prime is 68202539. The next prime is 68202551. The reversal of 68202540 is 4520286.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5242 + ... + 12801.

It is an arithmetic number, because the mean of its divisors is an integer number (2526160).

Almost surely, 2^68202540 is an apocalyptic number.

68202540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68202540 is an abundant number, since it is smaller than the sum of its proper divisors (174308820).

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

68202540 is a wasteful number, since it uses less digits than its factorization.

68202540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18068 (or 18060 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 68202540 is about 8258.4829115280. The cubic root of 68202540 is about 408.5703528378.

The spelling of 68202540 in words is "sixty-eight million, two hundred two thousand, five hundred forty".