1387662480 has 120 divisors (see below), whose sum is σ = 4671343872. Its totient is φ = 369161472.

The previous prime is 1387662469. The next prime is 1387662539. The reversal of 1387662480 is 842667831.

1387662480 is a `hidden beast` number, since 13 + 8 + 7 + 6 + 624 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 334177 + ... + 338303.

Almost surely, 2^1387662480 is an apocalyptic number.

1387662480 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 1387662480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2335671936).

1387662480 is an abundant number, since it is smaller than the sum of its proper divisors (3283681392).

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

1387662480 is a wasteful number, since it uses less digits than its factorization.

1387662480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4613 (or 4604 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 1387662480 is about 37251.3419892492. The cubic root of 1387662480 is about 1115.3930873542.

It can be divided in two parts, 138766 and 2480, that added together give a triangular number (141246 = T₅₃₁).

The spelling of 1387662480 in words is "one billion, three hundred eighty-seven million, six hundred sixty-two thousand, four hundred eighty".