30380688 has 60 divisors (see below), whose sum is σ = 91569660. Its totient is φ = 9347328.

The previous prime is 30380641. The next prime is 30380689. The reversal of 30380688 is 88608303.

It can be written as a sum of positive squares in 2 ways, for example, as 18766224 + 11614464 = 4332^2 + 3408^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (30380689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6243 + ... + 9986.

It is an arithmetic number, because the mean of its divisors is an integer number (1526161).

Almost surely, 2^30380688 is an apocalyptic number.

It is an amenable number.

30380688 is an abundant number, since it is smaller than the sum of its proper divisors (61188972).

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

30380688 is a wasteful number, since it uses less digits than its factorization.

30380688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16256 (or 16247 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 30380688 is about 5511.8679229459. The cubic root of 30380688 is about 312.0320479900.

The spelling of 30380688 in words is "thirty million, three hundred eighty thousand, six hundred eighty-eight".