71801370 has 64 divisors (see below), whose sum is σ = 202746240. Its totient is φ = 18019584.

The previous prime is 71801369. The next prime is 71801417. The reversal of 71801370 is 7310817.

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, 3232 + ... + 12411.

It is an arithmetic number, because the mean of its divisors is an integer number (3167910).

Almost surely, 2^71801370 is an apocalyptic number.

71801370 is an abundant number, since it is smaller than the sum of its proper divisors (130944870).

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

71801370 is a wasteful number, since it uses less digits than its factorization.

71801370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15676 (or 15670 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 71801370 is about 8473.5689057209. The cubic root of 71801370 is about 415.6338501894.

The spelling of 71801370 in words is "seventy-one million, eight hundred one thousand, three hundred seventy".