20023402 has 8 divisors (see below), whose sum is σ = 34325856. Its totient is φ = 8581452.

The previous prime is 20023391. The next prime is 20023403. The reversal of 20023402 is 20432002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20023403) 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, 715108 + ... + 715135.

It is an arithmetic number, because the mean of its divisors is an integer number (4290732).

Almost surely, 2^20023402 is an apocalyptic number.

20023402 is a deficient number, since it is larger than the sum of its proper divisors (14302454).

20023402 is a wasteful number, since it uses less digits than its factorization.

20023402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430252.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 20023402 is about 4474.7516132183. The cubic root of 20023402 is about 271.5475917281.

Adding to 20023402 its reverse (20432002), we get a palindrome (40455404).

The spelling of 20023402 in words is "twenty million, twenty-three thousand, four hundred two".