1234536128 has 28 divisors (see below), whose sum is σ = 2799752592. Its totient is φ = 529086720.

The previous prime is 1234536113. The next prime is 1234536137. The reversal of 1234536128 is 8216354321.

It is a tau number, because it is divible by the number of its divisors (28).

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, 1377383 + ... + 1378278.

It is an arithmetic number, because the mean of its divisors is an integer number (99991164).

Almost surely, 2^1234536128 is an apocalyptic number.

It is an amenable number.

1234536128 is an abundant number, since it is smaller than the sum of its proper divisors (1565216464).

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

1234536128 is an equidigital number, since it uses as much as digits as its factorization.

1234536128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755680 (or 2755670 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 1234536128 is about 35135.9663023518. The cubic root of 1234536128 is about 1072.7567798000.

The spelling of 1234536128 in words is "one billion, two hundred thirty-four million, five hundred thirty-six thousand, one hundred twenty-eight".