20946265 has 16 divisors (see below), whose sum is σ = 27374400. Its totient is φ = 15325632.

The previous prime is 20946259. The next prime is 20946269. The reversal of 20946265 is 56264902.

It is a cyclic number.

It is not a de Polignac number, because 20946265 - 2³ = 20946257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20946265.

It is not an unprimeable number, because it can be changed into a prime (20946269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1047 + ... + 6556.

It is an arithmetic number, because the mean of its divisors is an integer number (1710900).

Almost surely, 2^20946265 is an apocalyptic number.

It is an amenable number.

20946265 is a deficient number, since it is larger than the sum of its proper divisors (6428135).

20946265 is a wasteful number, since it uses less digits than its factorization.

20946265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7656.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 20946265 is about 4576.7089704284. The cubic root of 20946265 is about 275.6568979251.

The spelling of 20946265 in words is "twenty million, nine hundred forty-six thousand, two hundred sixty-five".