77420484 has 36 divisors (see below), whose sum is σ = 204212736. Its totient is φ = 24684528.

The previous prime is 77420467. The next prime is 77420501. The reversal of 77420484 is 48402477.

It is an interprime number because it is at equal distance from previous prime (77420467) and next prime (77420501).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45924 + ... + 47579.

It is an arithmetic number, because the mean of its divisors is an integer number (5672576).

Almost surely, 2^77420484 is an apocalyptic number.

It is an amenable number.

77420484 is an abundant number, since it is smaller than the sum of its proper divisors (126792252).

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

77420484 is a wasteful number, since it uses less digits than its factorization.

77420484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93536 (or 93531 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 36.

The square root of 77420484 is about 8798.8910664924. The cubic root of 77420484 is about 426.2050854083.

The spelling of 77420484 in words is "seventy-seven million, four hundred twenty thousand, four hundred eighty-four".