1240854672 has 20 divisors (see below), whose sum is σ = 3205541360. Its totient is φ = 413618208.

The previous prime is 1240854649. The next prime is 1240854677. The reversal of 1240854672 is 2764580421.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1240854672.

It is not an unprimeable number, because it can be changed into a prime (1240854677) 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, 12925522 + ... + 12925617.

It is an arithmetic number, because the mean of its divisors is an integer number (160277068).

Almost surely, 2^1240854672 is an apocalyptic number.

1240854672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1240854672 is an abundant number, since it is smaller than the sum of its proper divisors (1964686688).

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

1240854672 is a wasteful number, since it uses less digits than its factorization.

1240854672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25851150 (or 25851144 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 1240854672 is about 35225.7671598505. The cubic root of 1240854672 is about 1074.5838438211.

The spelling of 1240854672 in words is "one billion, two hundred forty million, eight hundred fifty-four thousand, six hundred seventy-two".