1387572480 has 216 divisors, whose sum is σ = 5487011712. Its totient is φ = 317140992.

The previous prime is 1387572463. The next prime is 1387572481. The reversal of 1387572480 is 842757831.

1387572480 is a `hidden beast` number, since 1 + 38 + 7 + 572 + 48 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387572481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72037 + ... + 89243.

It is an arithmetic number, because the mean of its divisors is an integer number (25402832).

Almost surely, 2^1387572480 is an apocalyptic number.

1387572480 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 1387572480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2743505856).

1387572480 is an abundant number, since it is smaller than the sum of its proper divisors (4099439232).

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

1387572480 is a wasteful number, since it uses less digits than its factorization.

1387572480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17241 (or 17224 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 1387572480 is about 37250.1339594907. The cubic root of 1387572480 is about 1115.3689730493.

The spelling of 1387572480 in words is "one billion, three hundred eighty-seven million, five hundred seventy-two thousand, four hundred eighty".