30722470 has 16 divisors (see below), whose sum is σ = 55465200. Its totient is φ = 12252384.

The previous prime is 30722431. The next prime is 30722473. The reversal of 30722470 is 7422703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30722473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 912 + ... + 7891.

It is an arithmetic number, because the mean of its divisors is an integer number (3466575).

Almost surely, 2^30722470 is an apocalyptic number.

30722470 is a deficient number, since it is larger than the sum of its proper divisors (24742730).

30722470 is a wasteful number, since it uses less digits than its factorization.

30722470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9159.

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 30722470 is about 5542.7854008612. The cubic root of 30722470 is about 313.1978049254.

It can be divided in two parts, 30 and 722470, that added together give a square (722500 = 850²).

The spelling of 30722470 in words is "thirty million, seven hundred twenty-two thousand, four hundred seventy".