20024002 has 4 divisors (see below), whose sum is σ = 30036006. Its totient is φ = 10012000.

The previous prime is 20023987. The next prime is 20024009. The reversal of 20024002 is 20042002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20042002 = 2 ⋅10021001.

It can be written as a sum of positive squares in only one way, i.e., 15046641 + 4977361 = 3879^2 + 2231^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20024002.

It is not an unprimeable number, because it can be changed into a prime (20024009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005999 + ... + 5006002.

Almost surely, 2^20024002 is an apocalyptic number.

20024002 is a deficient number, since it is larger than the sum of its proper divisors (10012004).

20024002 is a wasteful number, since it uses less digits than its factorization.

20024002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10012003.

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 20024002 is about 4474.8186555435. The cubic root of 20024002 is about 271.5503040032.

Adding to 20024002 its reverse (20042002), we get a palindrome (40066004).

The spelling of 20024002 in words is "twenty million, twenty-four thousand, two".