1253072988 has 18 divisors (see below), whose sum is σ = 3167490144. Its totient is φ = 417690984.

The previous prime is 1253072987. The next prime is 1253072999. The reversal of 1253072988 is 8892703521.

It is a happy number.

1253072988 is a `hidden beast` number, since 12 + 530 + 7 + 29 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253072981) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17403756 + ... + 17403827.

Almost surely, 2^1253072988 is an apocalyptic number.

1253072988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1253072988 is an abundant number, since it is smaller than the sum of its proper divisors (1914417156).

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

1253072988 is a wasteful number, since it uses less digits than its factorization.

1253072988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34807593 (or 34807588 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 1253072988 is about 35398.7709956151. The cubic root of 1253072988 is about 1078.0993628888.

The spelling of 1253072988 in words is "one billion, two hundred fifty-three million, seventy-two thousand, nine hundred eighty-eight".