71404872 has 64 divisors (see below), whose sum is σ = 222566400. Its totient is φ = 18546240.

The previous prime is 71404871. The next prime is 71404889. The reversal of 71404872 is 27840417.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (71404871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17472 + ... + 21167.

It is an arithmetic number, because the mean of its divisors is an integer number (3477600).

Almost surely, 2^71404872 is an apocalyptic number.

It is an amenable number.

71404872 is an abundant number, since it is smaller than the sum of its proper divisors (151161528).

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

71404872 is a wasteful number, since it uses less digits than its factorization.

71404872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38666 (or 38662 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 71404872 is about 8450.1403538640. The cubic root of 71404872 is about 414.8673733062.

The spelling of 71404872 in words is "seventy-one million, four hundred four thousand, eight hundred seventy-two".