30242457 has 24 divisors (see below), whose sum is σ = 52120800. Its totient is φ = 17280648.

The previous prime is 30242449. The next prime is 30242491. The reversal of 30242457 is 75424203.

It is not a de Polignac number, because 30242457 - 2³ = 30242449 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 30242457.

It is not an unprimeable number, because it can be changed into a prime (30242417) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10107 + ... + 12752.

It is an arithmetic number, because the mean of its divisors is an integer number (2171700).

Almost surely, 2^30242457 is an apocalyptic number.

It is an amenable number.

30242457 is a deficient number, since it is larger than the sum of its proper divisors (21878343).

30242457 is a wasteful number, since it uses less digits than its factorization.

30242457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22882 (or 22869 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 30242457 is about 5499.3142299745. The cubic root of 30242457 is about 311.5580836855.

The spelling of 30242457 in words is "thirty million, two hundred forty-two thousand, four hundred fifty-seven".