30925493 has 4 divisors (see below), whose sum is σ = 31231788. Its totient is φ = 30619200.

The previous prime is 30925463. The next prime is 30925519. The reversal of 30925493 is 39452903.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18130564 + 12794929 = 4258^2 + 3577^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30925493 is a prime.

It is a super-2 number, since 2×30925493² = 1912772234586098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30925403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152996 + ... + 153197.

It is an arithmetic number, because the mean of its divisors is an integer number (7807947).

Almost surely, 2^30925493 is an apocalyptic number.

It is an amenable number.

30925493 is a deficient number, since it is larger than the sum of its proper divisors (306295).

30925493 is a wasteful number, since it uses less digits than its factorization.

30925493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306294.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 30925493 is about 5561.0694115431. The cubic root of 30925493 is about 313.8861914626.

The spelling of 30925493 in words is "thirty million, nine hundred twenty-five thousand, four hundred ninety-three".