1385724236 has 24 divisors (see below), whose sum is σ = 2612578080. Its totient is φ = 639315072.

The previous prime is 1385724229. The next prime is 1385724239. The reversal of 1385724236 is 6324275831.

It is a junction number, because it is equal to n+sod(n) for n = 1385724193 and 1385724202.

It is not an unprimeable number, because it can be changed into a prime (1385724239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232040 + ... + 237936.

It is an arithmetic number, because the mean of its divisors is an integer number (108857420).

Almost surely, 2^1385724236 is an apocalyptic number.

It is an amenable number.

1385724236 is a deficient number, since it is larger than the sum of its proper divisors (1226853844).

1385724236 is a wasteful number, since it uses less digits than its factorization.

1385724236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10433 (or 10431 counting only the distinct ones).

The product of its digits is 241920, while the sum is 41.

The square root of 1385724236 is about 37225.3171376686. The cubic root of 1385724236 is about 1114.8735298651.

The spelling of 1385724236 in words is "one billion, three hundred eighty-five million, seven hundred twenty-four thousand, two hundred thirty-six".