4028070 has 16 divisors (see below), whose sum is σ = 9667440. Its totient is φ = 1074144.

The previous prime is 4028069. The next prime is 4028077. The reversal of 4028070 is 708204.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4028077) 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, 67105 + ... + 67164.

It is an arithmetic number, because the mean of its divisors is an integer number (604215).

Almost surely, 2^4028070 is an apocalyptic number.

4028070 is an abundant number, since it is smaller than the sum of its proper divisors (5639370).

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

4028070 is a wasteful number, since it uses less digits than its factorization.

4028070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134279.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 4028070 is about 2007.0052316823. The cubic root of 4028070 is about 159.1105595517.

Subtracting from 4028070 its sum of digits (21), we obtain a square (4028049 = 2007²).

The spelling of 4028070 in words is "four million, twenty-eight thousand, seventy".