30703272 has 16 divisors (see below), whose sum is σ = 76758240. Its totient is φ = 10234416.

The previous prime is 30703261. The next prime is 30703273. The reversal of 30703272 is 27230703.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 1279303 = 30703272 / (3 + 0 + 7 + 0 + 3 + 2 + 7 + 2).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (30703273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 639628 + ... + 639675.

It is an arithmetic number, because the mean of its divisors is an integer number (4797390).

Almost surely, 2^30703272 is an apocalyptic number.

It is an amenable number.

30703272 is an abundant number, since it is smaller than the sum of its proper divisors (46054968).

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

30703272 is a wasteful number, since it uses less digits than its factorization.

30703272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279312 (or 1279308 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 24.

The square root of 30703272 is about 5541.0533294672. The cubic root of 30703272 is about 313.1325538315.

Adding to 30703272 its reverse (27230703), we get a palindrome (57933975).

The spelling of 30703272 in words is "thirty million, seven hundred three thousand, two hundred seventy-two".