30400220 has 12 divisors (see below), whose sum is σ = 63840504. Its totient is φ = 12160080.

The previous prime is 30400219. The next prime is 30400231. The reversal of 30400220 is 2200403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 759986 + ... + 760025.

It is an arithmetic number, because the mean of its divisors is an integer number (5320042).

Almost surely, 2^30400220 is an apocalyptic number.

It is an amenable number.

30400220 is an abundant number, since it is smaller than the sum of its proper divisors (33440284).

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

30400220 is a wasteful number, since it uses less digits than its factorization.

30400220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520020 (or 1520018 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 30400220 is about 5513.6394513969. The cubic root of 30400220 is about 312.0989030081.

Adding to 30400220 its reverse (2200403), we get a palindrome (32600623).

The spelling of 30400220 in words is "thirty million, four hundred thousand, two hundred twenty".