30490057 has 8 divisors (see below), whose sum is σ = 33374600. Its totient is φ = 27682560.

The previous prime is 30490051. The next prime is 30490063. The reversal of 30490057 is 75009403.

It is an interprime number because it is at equal distance from previous prime (30490051) and next prime (30490063).

It can be written as a sum of positive squares in 4 ways, for example, as 5779216 + 24710841 = 2404^2 + 4971^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30490057 - 2²³ = 22101449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30490051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18432 + ... + 20017.

It is an arithmetic number, because the mean of its divisors is an integer number (4171825).

Almost surely, 2^30490057 is an apocalyptic number.

It is an amenable number.

30490057 is a deficient number, since it is larger than the sum of its proper divisors (2884543).

30490057 is a wasteful number, since it uses less digits than its factorization.

30490057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38523.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 30490057 is about 5521.7802382927. The cubic root of 30490057 is about 312.4060329741.

The spelling of 30490057 in words is "thirty million, four hundred ninety thousand, fifty-seven".