30648215 has 32 divisors (see below), whose sum is σ = 41731200. Its totient is φ = 21450240.

The previous prime is 30648193. The next prime is 30648221. The reversal of 30648215 is 51284603.

It is not a de Polignac number, because 30648215 - 2¹⁰ = 30647191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133721 + ... + 133949.

It is an arithmetic number, because the mean of its divisors is an integer number (1304100).

Almost surely, 2^30648215 is an apocalyptic number.

30648215 is a deficient number, since it is larger than the sum of its proper divisors (11082985).

30648215 is a wasteful number, since it uses less digits than its factorization.

30648215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 30648215 is about 5536.0830015454. The cubic root of 30648215 is about 312.9452724425.

The spelling of 30648215 in words is "thirty million, six hundred forty-eight thousand, two hundred fifteen".