1387750240 has 48 divisors (see below), whose sum is σ = 3300620400. Its totient is φ = 551365120.

The previous prime is 1387750229. The next prime is 1387750267. The reversal of 1387750240 is 420577831.

It is a self number, because there is not a number n which added to its sum of digits gives 1387750240.

It is a congruent number.

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, 5266 + ... + 52945.

It is an arithmetic number, because the mean of its divisors is an integer number (68762925).

Almost surely, 2^1387750240 is an apocalyptic number.

1387750240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1387750240 is an abundant number, since it is smaller than the sum of its proper divisors (1912870160).

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

1387750240 is a wasteful number, since it uses less digits than its factorization.

1387750240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58375 (or 58367 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 1387750240 is about 37252.5199147655. The cubic root of 1387750240 is about 1115.4166004767.

The spelling of 1387750240 in words is "one billion, three hundred eighty-seven million, seven hundred fifty thousand, two hundred forty".