1253307340 has 12 divisors (see below), whose sum is σ = 2631945456. Its totient is φ = 501322928.

The previous prime is 1253307299. The next prime is 1253307347. The reversal of 1253307340 is 437033521.

It is a junction number, because it is equal to n+sod(n) for n = 1253307299 and 1253307308.

It is not an unprimeable number, because it can be changed into a prime (1253307347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31332664 + ... + 31332703.

It is an arithmetic number, because the mean of its divisors is an integer number (219328788).

Almost surely, 2^1253307340 is an apocalyptic number.

1253307340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253307340 is an abundant number, since it is smaller than the sum of its proper divisors (1378638116).

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

1253307340 is a wasteful number, since it uses less digits than its factorization.

1253307340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62665376 (or 62665374 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 1253307340 is about 35402.0810122795. The cubic root of 1253307340 is about 1078.1665680703.

The spelling of 1253307340 in words is "one billion, two hundred fifty-three million, three hundred seven thousand, three hundred forty".