1238864 has 20 divisors (see below), whose sum is σ = 2618880. Its totient is φ = 563040.

The previous prime is 1238863. The next prime is 1238893. The reversal of 1238864 is 4688321.

It is a self number, because there is not a number n which added to its sum of digits gives 1238864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1238863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3344 + ... + 3695.

It is an arithmetic number, because the mean of its divisors is an integer number (130944).

2^1238864 is an apocalyptic number.

It is an amenable number.

1238864 is an abundant number, since it is smaller than the sum of its proper divisors (1380016).

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

1238864 is a wasteful number, since it uses less digits than its factorization.

1238864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7058 (or 7052 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 1238864 is about 1113.0426766301. The cubic root of 1238864 is about 107.4008893624.

The spelling of 1238864 in words is "one million, two hundred thirty-eight thousand, eight hundred sixty-four".