77429028 has 24 divisors (see below), whose sum is σ = 190177120. Its totient is φ = 24451200.

The previous prime is 77429003. The next prime is 77429029. The reversal of 77429028 is 82092477.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (77429029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169573 + ... + 170028.

Almost surely, 2^77429028 is an apocalyptic number.

It is an amenable number.

77429028 is an abundant number, since it is smaller than the sum of its proper divisors (112748092).

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

77429028 is a wasteful number, since it uses less digits than its factorization.

77429028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339627 (or 339625 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 77429028 is about 8799.3765688258. The cubic root of 77429028 is about 426.2207632673.

The spelling of 77429028 in words is "seventy-seven million, four hundred twenty-nine thousand, twenty-eight".