30140944 has 20 divisors (see below), whose sum is σ = 58528620. Its totient is φ = 15036800.

The previous prime is 30140933. The next prime is 30140963. The reversal of 30140944 is 44904103.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18662400 + 11478544 = 4320^2 + 3388^2 .

It is a super-2 number, since 2×30140944² = 1816953010422272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6294 + ... + 9994.

It is an arithmetic number, because the mean of its divisors is an integer number (2926431).

Almost surely, 2^30140944 is an apocalyptic number.

It is an amenable number.

30140944 is a deficient number, since it is larger than the sum of its proper divisors (28387676).

30140944 is a wasteful number, since it uses less digits than its factorization.

30140944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4218 (or 4212 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 30140944 is about 5490.0768664929. The cubic root of 30140944 is about 311.2090969513.

The spelling of 30140944 in words is "thirty million, one hundred forty thousand, nine hundred forty-four".