68273520 has 80 divisors (see below), whose sum is σ = 241889280. Its totient is φ = 15604992.

The previous prime is 68273509. The next prime is 68273531. The reversal of 68273520 is 2537286.

It is an interprime number because it is at equal distance from previous prime (68273509) and next prime (68273531).

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×68273520² = 9322547066380800, which contains 22 as substring.

It is a congruent number.

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, 18640 + ... + 21999.

It is an arithmetic number, because the mean of its divisors is an integer number (3023616).

Almost surely, 2^68273520 is an apocalyptic number.

68273520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68273520 is an abundant number, since it is smaller than the sum of its proper divisors (173615760).

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

68273520 is a wasteful number, since it uses less digits than its factorization.

68273520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40662 (or 40656 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 68273520 is about 8262.7791934675. The cubic root of 68273520 is about 408.7120399803.

The spelling of 68273520 in words is "sixty-eight million, two hundred seventy-three thousand, five hundred twenty".