30779140 has 24 divisors (see below), whose sum is σ = 73870272. Its totient is φ = 10552800.

The previous prime is 30779101. The next prime is 30779141. The reversal of 30779140 is 4197703.

It is not an unprimeable number, because it can be changed into a prime (30779141) 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, 109786 + ... + 110065.

It is an arithmetic number, because the mean of its divisors is an integer number (3077928).

Almost surely, 2^30779140 is an apocalyptic number.

It is an amenable number.

30779140 is an abundant number, since it is smaller than the sum of its proper divisors (43091132).

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

30779140 is a wasteful number, since it uses less digits than its factorization.

30779140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219867 (or 219865 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 30779140 is about 5547.8950963406. The cubic root of 30779140 is about 313.3902592613.

The spelling of 30779140 in words is "thirty million, seven hundred seventy-nine thousand, one hundred forty".