30725698 has 16 divisors (see below), whose sum is σ = 51369120. Its totient is φ = 13697856.

The previous prime is 30725659. The next prime is 30725699. The reversal of 30725698 is 89652703.

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

It is a self number, because there is not a number n which added to its sum of digits gives 30725698.

It is not an unprimeable number, because it can be changed into a prime (30725699) 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, 23136 + ... + 24427.

It is an arithmetic number, because the mean of its divisors is an integer number (3210570).

Almost surely, 2^30725698 is an apocalyptic number.

30725698 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

30725698 is a deficient number, since it is larger than the sum of its proper divisors (20643422).

30725698 is a wasteful number, since it uses less digits than its factorization.

30725698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47601.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 30725698 is about 5543.0765825487. The cubic root of 30725698 is about 313.2087737386.

The spelling of 30725698 in words is "thirty million, seven hundred twenty-five thousand, six hundred ninety-eight".