30819472 has 10 divisors (see below), whose sum is σ = 59712758. Its totient is φ = 15409728.

The previous prime is 30819469. The next prime is 30819473. The reversal of 30819472 is 27491803.

It can be written as a sum of positive squares in only one way, i.e., 23658496 + 7160976 = 4864^2 + 2676^2 .

It is not an unprimeable number, because it can be changed into a prime (30819473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 963093 + ... + 963124.

Almost surely, 2^30819472 is an apocalyptic number.

It is an amenable number.

30819472 is a deficient number, since it is larger than the sum of its proper divisors (28893286).

30819472 is a wasteful number, since it uses less digits than its factorization.

30819472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926225 (or 1926219 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 30819472 is about 5551.5287984482. The cubic root of 30819472 is about 313.5270850367.

The spelling of 30819472 in words is "thirty million, eight hundred nineteen thousand, four hundred seventy-two".