21932002 has 4 divisors (see below), whose sum is σ = 32898006. Its totient is φ = 10966000.

The previous prime is 21931997. The next prime is 21932039. The reversal of 21932002 is 20023912.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19368801 + 2563201 = 4401^2 + 1601^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5482999 + ... + 5483002.

Almost surely, 2^21932002 is an apocalyptic number.

21932002 is a deficient number, since it is larger than the sum of its proper divisors (10966004).

21932002 is a wasteful number, since it uses less digits than its factorization.

21932002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10966003.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 21932002 is about 4683.1615389606. The cubic root of 21932002 is about 279.9149486577.

Adding to 21932002 its reverse (20023912), we get a palindrome (41955914).

The spelling of 21932002 in words is "twenty-one million, nine hundred thirty-two thousand, two".