1305796428 has 18 divisors (see below), whose sum is σ = 3300763284. Its totient is φ = 435265464.

The previous prime is 1305796417. The next prime is 1305796447. The reversal of 1305796428 is 8246975031.

1305796428 is a `hidden beast` number, since 1 + 30 + 579 + 6 + 42 + 8 = 666.

1305796428 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×1305796428² = 3410208622755118368, which contains 22 as substring.

1305796428 is strictly pandigital in base 10.

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, 18136026 + ... + 18136097.

It is an arithmetic number, because the mean of its divisors is an integer number (183375738).

It is a 1-persistent number, because it is pandigital, but 2⋅1305796428 = 2611592856 is not.

Almost surely, 2^1305796428 is an apocalyptic number.

1305796428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1305796428 is an abundant number, since it is smaller than the sum of its proper divisors (1994966856).

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

1305796428 is a wasteful number, since it uses less digits than its factorization.

1305796428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36272133 (or 36272128 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 1305796428 is about 36135.8053459446. The cubic root of 1305796428 is about 1093.0125756551.

The spelling of 1305796428 in words is "one billion, three hundred five million, seven hundred ninety-six thousand, four hundred twenty-eight".