20416268 has 6 divisors (see below), whose sum is σ = 35728476. Its totient is φ = 10208132.

The previous prime is 20416247. The next prime is 20416309. The reversal of 20416268 is 86261402.

It is a self number, because there is not a number n which added to its sum of digits gives 20416268.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2552030 + ... + 2552037.

It is an arithmetic number, because the mean of its divisors is an integer number (5954746).

Almost surely, 2^20416268 is an apocalyptic number.

It is an amenable number.

20416268 is a deficient number, since it is larger than the sum of its proper divisors (15312208).

20416268 is a wasteful number, since it uses less digits than its factorization.

20416268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5104071 (or 5104069 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 20416268 is about 4518.4364552354. The cubic root of 20416268 is about 273.3120539981.

The spelling of 20416268 in words is "twenty million, four hundred sixteen thousand, two hundred sixty-eight".