30724473 has 8 divisors (see below), whose sum is σ = 44117248. Its totient is φ = 18907344.

The previous prime is 30724433. The next prime is 30724483. The reversal of 30724473 is 37442703.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30724473 - 2⁶ = 30724409 is a prime.

It is a super-2 number, since 2×30724473² = 1887986482255458, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30724473.

It is not an unprimeable number, because it can be changed into a prime (30724433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393865 + ... + 393942.

It is an arithmetic number, because the mean of its divisors is an integer number (5514656).

Almost surely, 2^30724473 is an apocalyptic number.

It is an amenable number.

30724473 is a deficient number, since it is larger than the sum of its proper divisors (13392775).

30724473 is a wasteful number, since it uses less digits than its factorization.

30724473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787823.

The product of its (nonzero) digits is 14112, while the sum is 30.

The square root of 30724473 is about 5542.9660832446. The cubic root of 30724473 is about 313.2046112528.

The spelling of 30724473 in words is "thirty million, seven hundred twenty-four thousand, four hundred seventy-three".