1240920228 has 12 divisors (see below), whose sum is σ = 2895480560. Its totient is φ = 413640072.

The previous prime is 1240920209. The next prime is 1240920251. The reversal of 1240920228 is 8220290421.

1240920228 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1240920195 and 1240920204.

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, 51704998 + ... + 51705021.

Almost surely, 2^1240920228 is an apocalyptic number.

It is an amenable number.

1240920228 is an abundant number, since it is smaller than the sum of its proper divisors (1654560332).

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

1240920228 is a wasteful number, since it uses less digits than its factorization.

1240920228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103410026 (or 103410024 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 1240920228 is about 35226.6976595877. The cubic root of 1240920228 is about 1074.6027673850.

The spelling of 1240920228 in words is "one billion, two hundred forty million, nine hundred twenty thousand, two hundred twenty-eight".