20652418 has 4 divisors (see below), whose sum is σ = 30978630. Its totient is φ = 10326208.

The previous prime is 20652407. The next prime is 20652439. The reversal of 20652418 is 81425602.

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., 20548089 + 104329 = 4533^2 + 323^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5163103 + ... + 5163106.

Almost surely, 2^20652418 is an apocalyptic number.

20652418 is a deficient number, since it is larger than the sum of its proper divisors (10326212).

20652418 is a wasteful number, since it uses less digits than its factorization.

20652418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10326211.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 20652418 is about 4544.4931510566. The cubic root of 20652418 is about 274.3617949654.

The spelling of 20652418 in words is "twenty million, six hundred fifty-two thousand, four hundred eighteen".