1232991240 has 64 divisors (see below), whose sum is σ = 3983515200. Its totient is φ = 303505152.

The previous prime is 1232991233. The next prime is 1232991247. The reversal of 1232991240 is 421992321.

It is an interprime number because it is at equal distance from previous prime (1232991233) and next prime (1232991247).

It is not an unprimeable number, because it can be changed into a prime (1232991247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393630 + ... + 396749.

It is an arithmetic number, because the mean of its divisors is an integer number (62242425).

Almost surely, 2^1232991240 is an apocalyptic number.

1232991240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232991240 is an abundant number, since it is smaller than the sum of its proper divisors (2750523960).

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

1232991240 is a wasteful number, since it uses less digits than its factorization.

1232991240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790406 (or 790402 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1232991240 is about 35113.9749957193. The cubic root of 1232991240 is about 1072.3091134457.

The spelling of 1232991240 in words is "one billion, two hundred thirty-two million, nine hundred ninety-one thousand, two hundred forty".