30493874 has 4 divisors (see below), whose sum is σ = 45740814. Its totient is φ = 15246936.

The previous prime is 30493867. The next prime is 30493891. The reversal of 30493874 is 47839403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47839403 = 6779 ⋅7057.

It can be written as a sum of positive squares in only one way, i.e., 17280649 + 13213225 = 4157^2 + 3635^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7623467 + ... + 7623470.

Almost surely, 2^30493874 is an apocalyptic number.

30493874 is a deficient number, since it is larger than the sum of its proper divisors (15246940).

30493874 is a wasteful number, since it uses less digits than its factorization.

30493874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15246939.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 30493874 is about 5522.1258587613. The cubic root of 30493874 is about 312.4190689623.

The spelling of 30493874 in words is "thirty million, four hundred ninety-three thousand, eight hundred seventy-four".