1304277020 has 12 divisors (see below), whose sum is σ = 2738981784. Its totient is φ = 521710800.

The previous prime is 1304276977. The next prime is 1304277049. The reversal of 1304277020 is 207724031.

It is a super-2 number, since 2×1304277020² = 3402277089800160800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32606906 + ... + 32606945.

It is an arithmetic number, because the mean of its divisors is an integer number (228248482).

Almost surely, 2^1304277020 is an apocalyptic number.

1304277020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304277020 is an abundant number, since it is smaller than the sum of its proper divisors (1434704764).

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

1304277020 is a wasteful number, since it uses less digits than its factorization.

1304277020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65213860 (or 65213858 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 1304277020 is about 36114.7756465411. The cubic root of 1304277020 is about 1092.5884726408.

The spelling of 1304277020 in words is "one billion, three hundred four million, two hundred seventy-seven thousand, twenty".