4028136 has 32 divisors (see below), whose sum is σ = 11509440. Its totient is φ = 1150848.

The previous prime is 4028093. The next prime is 4028137. The reversal of 4028136 is 6318204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (4028137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11821 + ... + 12156.

It is an arithmetic number, because the mean of its divisors is an integer number (359670).

Almost surely, 2^4028136 is an apocalyptic number.

It is an amenable number.

4028136 is an abundant number, since it is smaller than the sum of its proper divisors (7481304).

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

4028136 is a wasteful number, since it uses less digits than its factorization.

4028136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23993 (or 23989 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 4028136 is about 2007.0216740235. The cubic root of 4028136 is about 159.1114285568. Note that the first 3 decimals are identical.

The spelling of 4028136 in words is "four million, twenty-eight thousand, one hundred thirty-six".