73997880 has 128 divisors (see below), whose sum is σ = 246412800. Its totient is φ = 17625600.

The previous prime is 73997873. The next prime is 73997927. The reversal of 73997880 is 8879937.

It is a happy number.

It is a congruent number.

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, 80061 + ... + 80979.

It is an arithmetic number, because the mean of its divisors is an integer number (1925100).

Almost surely, 2^73997880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73997880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123206400).

73997880 is an abundant number, since it is smaller than the sum of its proper divisors (172414920).

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

73997880 is a wasteful number, since it uses less digits than its factorization.

73997880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005 (or 1001 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 51.

The square root of 73997880 is about 8602.2020436630. The cubic root of 73997880 is about 419.8296361204.

The spelling of 73997880 in words is "seventy-three million, nine hundred ninety-seven thousand, eight hundred eighty".