30725700 has 144 divisors (see below), whose sum is σ = 95577216. Its totient is φ = 7603200.

The previous prime is 30725699. The next prime is 30725701. The reversal of 30725700 is 752703.

It is an interprime number because it is at equal distance from previous prime (30725699) and next prime (30725701).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30725701) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 420864 + ... + 420936.

Almost surely, 2^30725700 is an apocalyptic number.

30725700 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30725700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47788608).

30725700 is an abundant number, since it is smaller than the sum of its proper divisors (64851516).

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

30725700 is a wasteful number, since it uses less digits than its factorization.

30725700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 24.

The square root of 30725700 is about 5543.0767629539. The cubic root of 30725700 is about 313.2087805344.

The spelling of 30725700 in words is "thirty million, seven hundred twenty-five thousand, seven hundred".