1308427764 has 96 divisors (see below), whose sum is σ = 3552568320. Its totient is φ = 367089408.

The previous prime is 1308427759. The next prime is 1308427807. The reversal of 1308427764 is 4677248031.

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

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, 2323747 + ... + 2324309.

It is an arithmetic number, because the mean of its divisors is an integer number (37005920).

Almost surely, 2^1308427764 is an apocalyptic number.

1308427764 is a gapful number since it is divisible by the number (14) 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 1308427764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1776284160).

1308427764 is an abundant number, since it is smaller than the sum of its proper divisors (2244140556).

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

1308427764 is a wasteful number, since it uses less digits than its factorization.

1308427764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029 (or 1027 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 1308427764 is about 36172.1960074309. The cubic root of 1308427764 is about 1093.7462667454.

The spelling of 1308427764 in words is "one billion, three hundred eight million, four hundred twenty-seven thousand, seven hundred sixty-four".