71403424 has 12 divisors (see below), whose sum is σ = 140575554. Its totient is φ = 35701696.

The previous prime is 71403421. The next prime is 71403433. The reversal of 71403424 is 42430417.

It can be written as a sum of positive squares in only one way, i.e., 66259600 + 5143824 = 8140^2 + 2268^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (71403421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115647 + ... + 1115710.

Almost surely, 2^71403424 is an apocalyptic number.

It is an amenable number.

71403424 is a deficient number, since it is larger than the sum of its proper divisors (69172130).

71403424 is a wasteful number, since it uses less digits than its factorization.

71403424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231367 (or 2231359 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 71403424 is about 8450.0546743793. The cubic root of 71403424 is about 414.8645689597.

The spelling of 71403424 in words is "seventy-one million, four hundred three thousand, four hundred twenty-four".