4020788 has 12 divisors (see below), whose sum is σ = 7208292. Its totient is φ = 1961280.

The previous prime is 4020781. The next prime is 4020833. The reversal of 4020788 is 8870204.

It can be written as a sum of positive squares in 2 ways, for example, as 478864 + 3541924 = 692^2 + 1882^2 .

It is a super-2 number, since 2×4020788² = 32333472281888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4020788.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020781) 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, 12095 + ... + 12422.

It is an arithmetic number, because the mean of its divisors is an integer number (600691).

Almost surely, 2^4020788 is an apocalyptic number.

It is an amenable number.

4020788 is a deficient number, since it is larger than the sum of its proper divisors (3187504).

4020788 is a wasteful number, since it uses less digits than its factorization.

4020788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24562 (or 24560 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 4020788 is about 2005.1902652866. The cubic root of 4020788 is about 159.0146209674.

The spelling of 4020788 in words is "four million, twenty thousand, seven hundred eighty-eight".