1230644040 has 32 divisors (see below), whose sum is σ = 3691932480. Its totient is φ = 328171712.

The previous prime is 1230644017. The next prime is 1230644053. The reversal of 1230644040 is 404460321.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1230644040.

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, 5127564 + ... + 5127803.

It is an arithmetic number, because the mean of its divisors is an integer number (115372890).

Almost surely, 2^1230644040 is an apocalyptic number.

1230644040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230644040 is an abundant number, since it is smaller than the sum of its proper divisors (2461288440).

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

1230644040 is a wasteful number, since it uses less digits than its factorization.

1230644040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10255381 (or 10255377 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1230644040 is about 35080.5364839251. The cubic root of 1230644040 is about 1071.6282427616.

The spelling of 1230644040 in words is "one billion, two hundred thirty million, six hundred forty-four thousand, forty".