1238356940 has 24 divisors (see below), whose sum is σ = 2655882432. Its totient is φ = 484803200.

The previous prime is 1238356921. The next prime is 1238356963. The reversal of 1238356940 is 496538321.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 657761 + ... + 659640.

It is an arithmetic number, because the mean of its divisors is an integer number (110661768).

Almost surely, 2^1238356940 is an apocalyptic number.

1238356940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1238356940 is an abundant number, since it is smaller than the sum of its proper divisors (1417525492).

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

1238356940 is a wasteful number, since it uses less digits than its factorization.

1238356940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317457 (or 1317455 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 1238356940 is about 35190.2961056027. The cubic root of 1238356940 is about 1073.8623450479.

The spelling of 1238356940 in words is "one billion, two hundred thirty-eight million, three hundred fifty-six thousand, nine hundred forty".