30288472 has 8 divisors (see below), whose sum is σ = 56790900. Its totient is φ = 15144232.

The previous prime is 30288449. The next prime is 30288473. The reversal of 30288472 is 27488203.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30288473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1893022 + ... + 1893037.

Almost surely, 2^30288472 is an apocalyptic number.

It is an amenable number.

30288472 is a deficient number, since it is larger than the sum of its proper divisors (26502428).

30288472 is a wasteful number, since it uses less digits than its factorization.

30288472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3786065 (or 3786061 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 30288472 is about 5503.4963432349. The cubic root of 30288472 is about 311.7160192689.

The spelling of 30288472 in words is "thirty million, two hundred eighty-eight thousand, four hundred seventy-two".