71951404 has 54 divisors (see below), whose sum is σ = 155298780. Its totient is φ = 29003184.

The previous prime is 71951393. The next prime is 71951431. The reversal of 71951404 is 40415917.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 517567 + ... + 517705.

Almost surely, 2^71951404 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 71951404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77649390).

71951404 is an abundant number, since it is smaller than the sum of its proper divisors (83347376).

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

71951404 is a wasteful number, since it uses less digits than its factorization.

71951404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 71951404 is about 8482.4173441302. The cubic root of 71951404 is about 415.9231474771.

The spelling of 71951404 in words is "seventy-one million, nine hundred fifty-one thousand, four hundred four".