30077720 has 16 divisors (see below), whose sum is σ = 67674960. Its totient is φ = 12031072.

The previous prime is 30077717. The next prime is 30077753. The reversal of 30077720 is 2777003.

It is a self number, because there is not a number n which added to its sum of digits gives 30077720.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 375932 + ... + 376011.

It is an arithmetic number, because the mean of its divisors is an integer number (4229685).

Almost surely, 2^30077720 is an apocalyptic number.

It is an amenable number.

30077720 is an abundant number, since it is smaller than the sum of its proper divisors (37597240).

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

30077720 is a wasteful number, since it uses less digits than its factorization.

30077720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751954 (or 751950 counting only the distinct ones).

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

The square root of 30077720 is about 5484.3158187690. The cubic root of 30077720 is about 310.9913460025.

The spelling of 30077720 in words is "thirty million, seventy-seven thousand, seven hundred twenty".