71791428 has 24 divisors (see below), whose sum is σ = 167650560. Its totient is φ = 23910880.

The previous prime is 71791427. The next prime is 71791429. The reversal of 71791428 is 82419717.

It is an interprime number because it is at equal distance from previous prime (71791427) and next prime (71791429).

It is not an unprimeable number, because it can be changed into a prime (71791427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26413 + ... + 29003.

It is an arithmetic number, because the mean of its divisors is an integer number (6985440).

Almost surely, 2^71791428 is an apocalyptic number.

It is an amenable number.

71791428 is an abundant number, since it is smaller than the sum of its proper divisors (95859132).

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

71791428 is a wasteful number, since it uses less digits than its factorization.

71791428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4907 (or 4905 counting only the distinct ones).

The product of its digits is 28224, while the sum is 39.

The square root of 71791428 is about 8472.9822376776. The cubic root of 71791428 is about 415.6146656786.

The spelling of 71791428 in words is "seventy-one million, seven hundred ninety-one thousand, four hundred twenty-eight".