1304147772 has 18 divisors (see below), whose sum is σ = 3296595848. Its totient is φ = 434715912.

The previous prime is 1304147753. The next prime is 1304147791. The reversal of 1304147772 is 2777414031.

It is an interprime number because it is at equal distance from previous prime (1304147753) and next prime (1304147791).

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1304147772² = 3401602822425127968, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 36226327 = 1304147772 / (1 + 3 + 0 + 4 + 1 + 4 + 7 + 7 + 7 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18113128 + ... + 18113199.

Almost surely, 2^1304147772 is an apocalyptic number.

1304147772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1304147772 is an abundant number, since it is smaller than the sum of its proper divisors (1992448076).

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

1304147772 is a wasteful number, since it uses less digits than its factorization.

1304147772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36226337 (or 36226332 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 1304147772 is about 36112.9861961040. The cubic root of 1304147772 is about 1092.5523812436.

The spelling of 1304147772 in words is "one billion, three hundred four million, one hundred forty-seven thousand, seven hundred seventy-two".