77020148 has 24 divisors (see below), whose sum is σ = 142420320. Its totient is φ = 36344160.

The previous prime is 77020147. The next prime is 77020157. The reversal of 77020148 is 84102077.

It is a self number, because there is not a number n which added to its sum of digits gives 77020148.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77020147) 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, 19718 + ... + 23298.

It is an arithmetic number, because the mean of its divisors is an integer number (5934180).

Almost surely, 2^77020148 is an apocalyptic number.

It is an amenable number.

77020148 is a deficient number, since it is larger than the sum of its proper divisors (65400172).

77020148 is a wasteful number, since it uses less digits than its factorization.

77020148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3887 (or 3885 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 77020148 is about 8776.1123511496. The cubic root of 77020148 is about 425.4691897936.

The spelling of 77020148 in words is "seventy-seven million, twenty thousand, one hundred forty-eight".