1230382440 has 128 divisors (see below), whose sum is σ = 4687200000. Its totient is φ = 281228544.

The previous prime is 1230382409. The next prime is 1230382459. The reversal of 1230382440 is 442830321.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73815 + ... + 88934.

It is an arithmetic number, because the mean of its divisors is an integer number (36618750).

Almost surely, 2^1230382440 is an apocalyptic number.

1230382440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230382440 is an abundant number, since it is smaller than the sum of its proper divisors (3456817560).

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

1230382440 is a wasteful number, since it uses less digits than its factorization.

1230382440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162776 (or 162766 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 1230382440 is about 35076.8077224824. The cubic root of 1230382440 is about 1071.5523047959.

The spelling of 1230382440 in words is "one billion, two hundred thirty million, three hundred eighty-two thousand, four hundred forty".