1386712880 has 40 divisors (see below), whose sum is σ = 3684695712. Its totient is φ = 475444224.

The previous prime is 1386712861. The next prime is 1386712897. The reversal of 1386712880 is 882176831.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1386712880² = 3845945223115788800, which contains 22 as substring.

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, 1237577 + ... + 1238696.

Almost surely, 2^1386712880 is an apocalyptic number.

1386712880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1386712880 is an abundant number, since it is smaller than the sum of its proper divisors (2297982832).

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

1386712880 is a wasteful number, since it uses less digits than its factorization.

1386712880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2476293 (or 2476287 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 1386712880 is about 37238.5939584190. The cubic root of 1386712880 is about 1115.1386020868.

The spelling of 1386712880 in words is "one billion, three hundred eighty-six million, seven hundred twelve thousand, eight hundred eighty".