20040452 has 24 divisors (see below), whose sum is σ = 37205952. Its totient is φ = 9424800.

The previous prime is 20040443. The next prime is 20040463. The reversal of 20040452 is 25404002.

It is a self number, because there is not a number n which added to its sum of digits gives 20040452.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3827 + ... + 7397.

It is an arithmetic number, because the mean of its divisors is an integer number (1550248).

Almost surely, 2^20040452 is an apocalyptic number.

It is an amenable number.

20040452 is a deficient number, since it is larger than the sum of its proper divisors (17165500).

20040452 is a wasteful number, since it uses less digits than its factorization.

20040452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3659 (or 3657 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 20040452 is about 4476.6563415120. The cubic root of 20040452 is about 271.6246444510.

Adding to 20040452 its reverse (25404002), we get a palindrome (45444454).

The spelling of 20040452 in words is "twenty million, forty thousand, four hundred fifty-two".