8013438 has 32 divisors (see below), whose sum is σ = 18385920. Its totient is φ = 2584440.

The previous prime is 8013433. The next prime is 8013449. The reversal of 8013438 is 8343108.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8013433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 720 + ... + 4067.

It is an arithmetic number, because the mean of its divisors is an integer number (574560).

Almost surely, 2^8013438 is an apocalyptic number.

8013438 is an abundant number, since it is smaller than the sum of its proper divisors (10372482).

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

8013438 is a wasteful number, since it uses less digits than its factorization.

8013438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4829 (or 4823 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 8013438 is about 2830.8016532424. The cubic root of 8013438 is about 200.1119206904. Note that the first 3 decimals are identical.

The spelling of 8013438 in words is "eight million, thirteen thousand, four hundred thirty-eight".