30779085 has 32 divisors (see below), whose sum is σ = 50429952. Its totient is φ = 16027200.

The previous prime is 30779081. The next prime is 30779087. The reversal of 30779085 is 58097703.

It is not a de Polignac number, because 30779085 - 2² = 30779081 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30779081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203760 + ... + 203910.

It is an arithmetic number, because the mean of its divisors is an integer number (1575936).

Almost surely, 2^30779085 is an apocalyptic number.

30779085 is the 4530-th pentagonal number.

It is an amenable number.

30779085 is a deficient number, since it is larger than the sum of its proper divisors (19650867).

30779085 is a wasteful number, since it uses less digits than its factorization.

30779085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 30779085 is about 5547.8901395035. The cubic root of 30779085 is about 313.3900725929.

The spelling of 30779085 in words is "thirty million, seven hundred seventy-nine thousand, eighty-five".