1253374920 has 288 divisors, whose sum is σ = 4856899320. Its totient is φ = 279336960.

The previous prime is 1253374907. The next prime is 1253374931. The reversal of 1253374920 is 294733521.

It can be written as a sum of positive squares in 4 ways, for example, as 641406276 + 611968644 = 25326^2 + 24738^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 722374 + ... + 724106.

Almost surely, 2^1253374920 is an apocalyptic number.

1253374920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1253374920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2428449660).

1253374920 is an abundant number, since it is smaller than the sum of its proper divisors (3603524400).

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

1253374920 is a wasteful number, since it uses less digits than its factorization.

1253374920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805 (or 1791 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 1253374920 is about 35403.0354630786. The cubic root of 1253374920 is about 1078.1859464475.

The spelling of 1253374920 in words is "one billion, two hundred fifty-three million, three hundred seventy-four thousand, nine hundred twenty".