30879772 has 48 divisors (see below), whose sum is σ = 68076288. Its totient is φ = 11905920.

The previous prime is 30879767. The next prime is 30879773. The reversal of 30879772 is 27797803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30879773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32488 + ... + 33424.

It is an arithmetic number, because the mean of its divisors is an integer number (1418256).

Almost surely, 2^30879772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30879772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34038144).

30879772 is an abundant number, since it is smaller than the sum of its proper divisors (37196516).

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

30879772 is a wasteful number, since it uses less digits than its factorization.

30879772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066 (or 1064 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 30879772 is about 5556.9570809932. The cubic root of 30879772 is about 313.7314295131.

The spelling of 30879772 in words is "thirty million, eight hundred seventy-nine thousand, seven hundred seventy-two".