30220240 has 40 divisors (see below), whose sum is σ = 70495488. Its totient is φ = 12048000.

The previous prime is 30220219. The next prime is 30220273. The reversal of 30220240 is 4202203.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 30220240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39865 + ... + 40615.

Almost surely, 2^30220240 is an apocalyptic number.

It is an amenable number.

30220240 is an abundant number, since it is smaller than the sum of its proper divisors (40275248).

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

30220240 is a wasteful number, since it uses less digits than its factorization.

30220240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267 (or 1261 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 30220240 is about 5497.2938797194. The cubic root of 30220240 is about 311.4817717460.

Adding to 30220240 its reverse (4202203), we get a palindrome (34422443).

The spelling of 30220240 in words is "thirty million, two hundred twenty thousand, two hundred forty".