4015138 has 8 divisors (see below), whose sum is σ = 6031980. Its totient is φ = 2004480.

The previous prime is 4015117. The next prime is 4015139. The reversal of 4015138 is 8315104.

It can be written as a sum of positive squares in 2 ways, for example, as 3751969 + 263169 = 1937^2 + 513^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×4015138² = 32242666318088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4015139) 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, 778 + ... + 2938.

Almost surely, 2^4015138 is an apocalyptic number.

4015138 is a deficient number, since it is larger than the sum of its proper divisors (2016842).

4015138 is a wasteful number, since it uses less digits than its factorization.

4015138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3092.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 4015138 is about 2003.7809261494. The cubic root of 4015138 is about 158.9401037531.

The spelling of 4015138 in words is "four million, fifteen thousand, one hundred thirty-eight".