1253998672 has 40 divisors (see below), whose sum is σ = 2529557096. Its totient is φ = 601675776.

The previous prime is 1253998633. The next prime is 1253998747. The reversal of 1253998672 is 2768993521.

It can be written as a sum of positive squares in 4 ways, for example, as 270799936 + 983198736 = 16456^2 + 31356^2 .

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, 28708 + ... + 57724.

Almost surely, 2^1253998672 is an apocalyptic number.

It is an amenable number.

1253998672 is an abundant number, since it is smaller than the sum of its proper divisors (1275558424).

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

1253998672 is a wasteful number, since it uses less digits than its factorization.

1253998672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29135 (or 29129 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 52.

The square root of 1253998672 is about 35411.8436684678. The cubic root of 1253998672 is about 1078.3647727239.

The spelling of 1253998672 in words is "one billion, two hundred fifty-three million, nine hundred ninety-eight thousand, six hundred seventy-two".