30291472 has 20 divisors (see below), whose sum is σ = 61779280. Its totient is φ = 14348448.

The previous prime is 30291409. The next prime is 30291473. The reversal of 30291472 is 27419203.

It is a self number, because there is not a number n which added to its sum of digits gives 30291472.

It is not an unprimeable number, because it can be changed into a prime (30291473) 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 3 ways as a sum of consecutive naturals, for example, 49518 + ... + 50125.

It is an arithmetic number, because the mean of its divisors is an integer number (3088964).

Almost surely, 2^30291472 is an apocalyptic number.

It is an amenable number.

30291472 is an abundant number, since it is smaller than the sum of its proper divisors (31487808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30291472 is a wasteful number, since it uses less digits than its factorization.

30291472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99670 (or 99664 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 30291472 is about 5503.7688904968. The cubic root of 30291472 is about 311.7263105021.

The spelling of 30291472 in words is "thirty million, two hundred ninety-one thousand, four hundred seventy-two".