71294780 has 12 divisors (see below), whose sum is σ = 149719080. Its totient is φ = 28517904.

The previous prime is 71294771. The next prime is 71294791. The reversal of 71294780 is 8749217.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1782350 + ... + 1782389.

It is an arithmetic number, because the mean of its divisors is an integer number (12476590).

Almost surely, 2^71294780 is an apocalyptic number.

It is an amenable number.

71294780 is an abundant number, since it is smaller than the sum of its proper divisors (78424300).

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

71294780 is a wasteful number, since it uses less digits than its factorization.

71294780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3564748 (or 3564746 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 71294780 is about 8443.6236296983. The cubic root of 71294780 is about 414.6540495237.

The spelling of 71294780 in words is "seventy-one million, two hundred ninety-four thousand, seven hundred eighty".