71404372 has 12 divisors (see below), whose sum is σ = 134569876. Its totient is φ = 32955840.

The previous prime is 71404367. The next prime is 71404373. The reversal of 71404372 is 27340417.

It can be written as a sum of positive squares in 2 ways, for example, as 20196036 + 51208336 = 4494^2 + 7156^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 71404372.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71404373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 686529 + ... + 686632.

Almost surely, 2^71404372 is an apocalyptic number.

It is an amenable number.

71404372 is a deficient number, since it is larger than the sum of its proper divisors (63165504).

71404372 is a wasteful number, since it uses less digits than its factorization.

71404372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373178 (or 1373176 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 71404372 is about 8450.1107685048. The cubic root of 71404372 is about 414.8664049588.

Adding to 71404372 its reverse (27340417), we get a palindrome (98744789).

The spelling of 71404372 in words is "seventy-one million, four hundred four thousand, three hundred seventy-two".