1238396620 has 24 divisors (see below), whose sum is σ = 2753612064. Its totient is φ = 466219776.

The previous prime is 1238396617. The next prime is 1238396629. The reversal of 1238396620 is 266938321.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1238396629) 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, 1820832 + ... + 1821511.

It is an arithmetic number, because the mean of its divisors is an integer number (114733836).

Almost surely, 2^1238396620 is an apocalyptic number.

1238396620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1238396620 is an abundant number, since it is smaller than the sum of its proper divisors (1515215444).

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

1238396620 is a wasteful number, since it uses less digits than its factorization.

1238396620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3642369 (or 3642367 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 1238396620 is about 35190.8598928756. The cubic root of 1238396620 is about 1073.8738146550.

The spelling of 1238396620 in words is "one billion, two hundred thirty-eight million, three hundred ninety-six thousand, six hundred twenty".