4138722 has 32 divisors (see below), whose sum is σ = 10512000. Its totient is φ = 1182384.

The previous prime is 4138711. The next prime is 4138723. The reversal of 4138722 is 2278314.

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

It is not an unprimeable number, because it can be changed into a prime (4138723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5097 + ... + 5852.

It is an arithmetic number, because the mean of its divisors is an integer number (328500).

Almost surely, 2^4138722 is an apocalyptic number.

4138722 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

4138722 is an abundant number, since it is smaller than the sum of its proper divisors (6373278).

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

4138722 is a wasteful number, since it uses less digits than its factorization.

4138722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10967 (or 10961 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 4138722 is about 2034.3849193307. The cubic root of 4138722 is about 160.5543531521.

The spelling of 4138722 in words is "four million, one hundred thirty-eight thousand, seven hundred twenty-two".