30777020 has 12 divisors (see below), whose sum is σ = 64631784. Its totient is φ = 12310800.

The previous prime is 30776983. The next prime is 30777031. The reversal of 30777020 is 2077703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 769406 + ... + 769445.

It is an arithmetic number, because the mean of its divisors is an integer number (5385982).

Almost surely, 2^30777020 is an apocalyptic number.

It is an amenable number.

30777020 is an abundant number, since it is smaller than the sum of its proper divisors (33854764).

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

30777020 is a wasteful number, since it uses less digits than its factorization.

30777020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538860 (or 1538858 counting only the distinct ones).

The product of its (nonzero) digits is 2058, while the sum is 26.

The square root of 30777020 is about 5547.7040295964. The cubic root of 30777020 is about 313.3830638837.

The spelling of 30777020 in words is "thirty million, seven hundred seventy-seven thousand, twenty".