30775690 has 16 divisors (see below), whose sum is σ = 60432480. Its totient is φ = 11191120.

The previous prime is 30775673. The next prime is 30775691. The reversal of 30775690 is 9657703.

It is a super-2 number, since 2×30775690² = 1894286189952200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30775691) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 139780 + ... + 139999.

It is an arithmetic number, because the mean of its divisors is an integer number (3777030).

Almost surely, 2^30775690 is an apocalyptic number.

30775690 is a deficient number, since it is larger than the sum of its proper divisors (29656790).

30775690 is a wasteful number, since it uses less digits than its factorization.

30775690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279797.

The product of its (nonzero) digits is 39690, while the sum is 37.

The square root of 30775690 is about 5547.5841588930. The cubic root of 30775690 is about 313.3785496338.

The spelling of 30775690 in words is "thirty million, seven hundred seventy-five thousand, six hundred ninety".