68842020 has 48 divisors (see below), whose sum is σ = 207587520. Its totient is φ = 16945536.

The previous prime is 68842019. The next prime is 68842049. The reversal of 68842020 is 2024886.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43350 + ... + 44909.

It is an arithmetic number, because the mean of its divisors is an integer number (4324740).

Almost surely, 2^68842020 is an apocalyptic number.

68842020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68842020 is an abundant number, since it is smaller than the sum of its proper divisors (138745500).

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

68842020 is a wasteful number, since it uses less digits than its factorization.

68842020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88284 (or 88282 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 68842020 is about 8297.1091351145. The cubic root of 68842020 is about 409.8433270112.

The spelling of 68842020 in words is "sixty-eight million, eight hundred forty-two thousand, twenty".