71403912 has 48 divisors (see below), whose sum is σ = 199630080. Its totient is φ = 23032800.

The previous prime is 71403911. The next prime is 71403923. The reversal of 71403912 is 21930417.

It is not an unprimeable number, because it can be changed into a prime (71403911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13764 + ... + 18227.

It is an arithmetic number, because the mean of its divisors is an integer number (4158960).

Almost surely, 2^71403912 is an apocalyptic number.

71403912 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

71403912 is an abundant number, since it is smaller than the sum of its proper divisors (128226168).

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

71403912 is a wasteful number, since it uses less digits than its factorization.

71403912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32034 (or 32027 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 71403912 is about 8450.0835498828. The cubic root of 71403912 is about 414.8655140752.

The spelling of 71403912 in words is "seventy-one million, four hundred three thousand, nine hundred twelve".