77420330 has 32 divisors (see below), whose sum is σ = 154925568. Its totient is φ = 27662400.

The previous prime is 77420297. The next prime is 77420347. The reversal of 77420330 is 3302477.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 77420330.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5576 + ... + 13635.

It is an arithmetic number, because the mean of its divisors is an integer number (4841424).

Almost surely, 2^77420330 is an apocalyptic number.

77420330 is an abundant number, since it is smaller than the sum of its proper divisors (77505238).

77420330 is a wasteful number, since it uses less digits than its factorization.

77420330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19262.

The product of its (nonzero) digits is 3528, while the sum is 26.

The square root of 77420330 is about 8798.8823153853. The cubic root of 77420330 is about 426.2048028146.

The spelling of 77420330 in words is "seventy-seven million, four hundred twenty thousand, three hundred thirty".