20469766 has 16 divisors (see below), whose sum is σ = 32367600. Its totient is φ = 9694048.

The previous prime is 20469739. The next prime is 20469791. The reversal of 20469766 is 66796402.

It is a super-2 number, since 2×20469766² = 838022640189512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256 + ... + 6403.

It is an arithmetic number, because the mean of its divisors is an integer number (2022975).

Almost surely, 2^20469766 is an apocalyptic number.

20469766 is a deficient number, since it is larger than the sum of its proper divisors (11897834).

20469766 is a wasteful number, since it uses less digits than its factorization.

20469766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6743.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 20469766 is about 4524.3525503656. The cubic root of 20469766 is about 273.5505712350.

The spelling of 20469766 in words is "twenty million, four hundred sixty-nine thousand, seven hundred sixty-six".