77480472 has 32 divisors (see below), whose sum is σ = 194831280. Its totient is φ = 25676160.

The previous prime is 77480467. The next prime is 77480477. The reversal of 77480472 is 27408477.

It is an interprime number because it is at equal distance from previous prime (77480467) and next prime (77480477).

It is a self number, because there is not a number n which added to its sum of digits gives 77480472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77480477) 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, 5179 + ... + 13482.

Almost surely, 2^77480472 is an apocalyptic number.

It is an amenable number.

77480472 is an abundant number, since it is smaller than the sum of its proper divisors (117350808).

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

77480472 is a wasteful number, since it uses less digits than its factorization.

77480472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18843 (or 18839 counting only the distinct ones).

The product of its (nonzero) digits is 87808, while the sum is 39.

The square root of 77480472 is about 8802.2992450836. The cubic root of 77480472 is about 426.3151363437.

The spelling of 77480472 in words is "seventy-seven million, four hundred eighty thousand, four hundred seventy-two".