1270220920 has 32 divisors (see below), whose sum is σ = 2878570800. Its totient is φ = 504430848.

The previous prime is 1270220899. The next prime is 1270220921. The reversal of 1270220920 is 290220721.

It is a super-2 number, since 2×1270220920² = 3226922371211292800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1270220921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108669 + ... + 119788.

Almost surely, 2^1270220920 is an apocalyptic number.

1270220920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1270220920 is an abundant number, since it is smaller than the sum of its proper divisors (1608349880).

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

1270220920 is a wasteful number, since it uses less digits than its factorization.

1270220920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228607 (or 228603 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 1270220920 is about 35640.1588099717. The cubic root of 1270220920 is about 1082.9949222010.

The spelling of 1270220920 in words is "one billion, two hundred seventy million, two hundred twenty thousand, nine hundred twenty".