1385568240 has 160 divisors (see below), whose sum is σ = 4921399296. Its totient is φ = 315893760.

The previous prime is 1385568229. The next prime is 1385568253. The reversal of 1385568240 is 428655831.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1385568192 and 1385568201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 874489 + ... + 876071.

Almost surely, 2^1385568240 is an apocalyptic number.

1385568240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1385568240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2460699648).

1385568240 is an abundant number, since it is smaller than the sum of its proper divisors (3535831056).

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

1385568240 is a wasteful number, since it uses less digits than its factorization.

1385568240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2127 (or 2121 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 42.

The square root of 1385568240 is about 37223.2217842572. The cubic root of 1385568240 is about 1114.8316931771.

The spelling of 1385568240 in words is "one billion, three hundred eighty-five million, five hundred sixty-eight thousand, two hundred forty".