1272000090 has 32 divisors (see below), whose sum is σ = 3059513280. Its totient is φ = 338454144.

The previous prime is 1272000083. The next prime is 1272000109. The reversal of 1272000090 is 900002721.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32680 + ... + 60099.

It is an arithmetic number, because the mean of its divisors is an integer number (95609790).

Almost surely, 2^1272000090 is an apocalyptic number.

1272000090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1272000090 is an abundant number, since it is smaller than the sum of its proper divisors (1787513190).

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

1272000090 is a wasteful number, since it uses less digits than its factorization.

1272000090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93246.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 1272000090 is about 35665.1102619913. The cubic root of 1272000090 is about 1083.5003285497.

The spelling of 1272000090 in words is "one billion, two hundred seventy-two million, ninety", and thus it is an aban number.