20945366 has 16 divisors (see below), whose sum is σ = 35002800. Its totient is φ = 9333408.

The previous prime is 20945363. The next prime is 20945369. The reversal of 20945366 is 66354902.

It is an interprime number because it is at equal distance from previous prime (20945363) and next prime (20945369).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20945363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13136 + ... + 14643.

It is an arithmetic number, because the mean of its divisors is an integer number (2187675).

Almost surely, 2^20945366 is an apocalyptic number.

20945366 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20945366 is a deficient number, since it is larger than the sum of its proper divisors (14057434).

20945366 is a wasteful number, since it uses less digits than its factorization.

20945366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27823.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 20945366 is about 4576.6107546961. The cubic root of 20945366 is about 275.6529541974.

The spelling of 20945366 in words is "twenty million, nine hundred forty-five thousand, three hundred sixty-six".