30725398 has 16 divisors (see below), whose sum is σ = 50523840. Its totient is φ = 13897800.

The previous prime is 30725393. The next prime is 30725411. The reversal of 30725398 is 89352703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30725393) 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, 1333 + ... + 7951.

It is an arithmetic number, because the mean of its divisors is an integer number (3157740).

Almost surely, 2^30725398 is an apocalyptic number.

30725398 is a deficient number, since it is larger than the sum of its proper divisors (19798442).

30725398 is a wasteful number, since it uses less digits than its factorization.

30725398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6843.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 30725398 is about 5543.0495216983. The cubic root of 30725398 is about 313.2077543646.

The spelling of 30725398 in words is "thirty million, seven hundred twenty-five thousand, three hundred ninety-eight".