1338728235 has 48 divisors (see below), whose sum is σ = 2333258592. Its totient is φ = 651571200.

The previous prime is 1338728227. The next prime is 1338728263. The reversal of 1338728235 is 5328278331.

It is not a de Polignac number, because 1338728235 - 2³ = 1338728227 is a prime.

Its product of digits (241920) is a multiple of the sum of its prime factors (896).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1988859 + ... + 1989531.

It is an arithmetic number, because the mean of its divisors is an integer number (48609554).

Almost surely, 2^1338728235 is an apocalyptic number.

1338728235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1338728235 is a deficient number, since it is larger than the sum of its proper divisors (994530357).

1338728235 is a wasteful number, since it uses less digits than its factorization.

1338728235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896 (or 795 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 1338728235 is about 36588.6353257401. The cubic root of 1338728235 is about 1102.1248830533.

The spelling of 1338728235 in words is "one billion, three hundred thirty-eight million, seven hundred twenty-eight thousand, two hundred thirty-five".