30147915 has 64 divisors (see below), whose sum is σ = 58060800. Its totient is φ = 13071360.

The previous prime is 30147913. The next prime is 30147961. The reversal of 30147915 is 51974103.

It is not a de Polignac number, because 30147915 - 2¹ = 30147913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30147913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 202261 + ... + 202409.

It is an arithmetic number, because the mean of its divisors is an integer number (907200).

Almost surely, 2^30147915 is an apocalyptic number.

30147915 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

30147915 is a deficient number, since it is larger than the sum of its proper divisors (27912885).

30147915 is a wasteful number, since it uses less digits than its factorization.

30147915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 30147915 is about 5490.7117025027. The cubic root of 30147915 is about 311.2330872570.

The spelling of 30147915 in words is "thirty million, one hundred forty-seven thousand, nine hundred fifteen".