1304646090 has 32 divisors (see below), whose sum is σ = 3415801536. Its totient is φ = 316277760.

The previous prime is 1304646071. The next prime is 1304646097. The reversal of 1304646090 is 906464031.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1304646097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1976407 + ... + 1977066.

It is an arithmetic number, because the mean of its divisors is an integer number (106743798).

Almost surely, 2^1304646090 is an apocalyptic number.

1304646090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1304646090 is an abundant number, since it is smaller than the sum of its proper divisors (2111155446).

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

1304646090 is a wasteful number, since it uses less digits than its factorization.

1304646090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3953494.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 1304646090 is about 36119.8849665942. The cubic root of 1304646090 is about 1092.6915191542.

The spelling of 1304646090 in words is "one billion, three hundred four million, six hundred forty-six thousand, ninety".