77071480 has 32 divisors (see below), whose sum is σ = 177447600. Its totient is φ = 30110976.

The previous prime is 77071471. The next prime is 77071483. The reversal of 77071480 is 8417077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77071483) 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, 20685 + ... + 24124.

Almost surely, 2^77071480 is an apocalyptic number.

It is an amenable number.

77071480 is an abundant number, since it is smaller than the sum of its proper divisors (100376120).

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

77071480 is a wasteful number, since it uses less digits than its factorization.

77071480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44863 (or 44859 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 34.

The square root of 77071480 is about 8779.0363935913. The cubic root of 77071480 is about 425.5636903229.

The spelling of 77071480 in words is "seventy-seven million, seventy-one thousand, four hundred eighty".