30157660 has 48 divisors (see below), whose sum is σ = 72225216. Its totient is φ = 10478592.

The previous prime is 30157657. The next prime is 30157661. The reversal of 30157660 is 6675103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30157661) 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 15 ways as a sum of consecutive naturals, for example, 1009 + ... + 7831.

It is an arithmetic number, because the mean of its divisors is an integer number (1504692).

Almost surely, 2^30157660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30157660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36112608).

30157660 is an abundant number, since it is smaller than the sum of its proper divisors (42067556).

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

30157660 is a wasteful number, since it uses less digits than its factorization.

30157660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6862 (or 6860 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 30157660 is about 5491.5990385315. The cubic root of 30157660 is about 311.2666179307.

The spelling of 30157660 in words is "thirty million, one hundred fifty-seven thousand, six hundred sixty".