30240457 has 16 divisors (see below), whose sum is σ = 34513920. Its totient is φ = 26265600.

The previous prime is 30240449. The next prime is 30240473. The reversal of 30240457 is 75404203.

It is not a de Polignac number, because 30240457 - 2³ = 30240449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30240437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46857 + ... + 47497.

It is an arithmetic number, because the mean of its divisors is an integer number (2157120).

Almost surely, 2^30240457 is an apocalyptic number.

It is an amenable number.

30240457 is a deficient number, since it is larger than the sum of its proper divisors (4273463).

30240457 is a wasteful number, since it uses less digits than its factorization.

30240457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 30240457 is about 5499.1323861133. The cubic root of 30240457 is about 311.5512155276.

The spelling of 30240457 in words is "thirty million, two hundred forty thousand, four hundred fifty-seven".