30406248 has 24 divisors (see below), whose sum is σ = 82350450. Its totient is φ = 10135392.

The previous prime is 30406241. The next prime is 30406249. The reversal of 30406248 is 84260403.

30406248 is a `hidden beast` number, since 30 + 4 + 0 + 624 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 23213124 + 7193124 = 4818^2 + 2682^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (30406241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 211083 + ... + 211226.

Almost surely, 2^30406248 is an apocalyptic number.

It is an amenable number.

30406248 is an abundant number, since it is smaller than the sum of its proper divisors (51944202).

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

30406248 is a wasteful number, since it uses less digits than its factorization.

30406248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422321 (or 422314 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 30406248 is about 5514.1860686778. The cubic root of 30406248 is about 312.1195301379.

The spelling of 30406248 in words is "thirty million, four hundred six thousand, two hundred forty-eight".