30648390 has 32 divisors (see below), whose sum is σ = 73716480. Its totient is φ = 8155104.

The previous prime is 30648353. The next prime is 30648391. The reversal of 30648390 is 9384603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30648391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18621 + ... + 20199.

It is an arithmetic number, because the mean of its divisors is an integer number (2303640).

Almost surely, 2^30648390 is an apocalyptic number.

30648390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30648390 is an abundant number, since it is smaller than the sum of its proper divisors (43068090).

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

30648390 is a wasteful number, since it uses less digits than its factorization.

30648390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 30648390 is about 5536.0988069217. The cubic root of 30648390 is about 312.9458680761.

The spelling of 30648390 in words is "thirty million, six hundred forty-eight thousand, three hundred ninety".