20694249 has 12 divisors (see below), whose sum is σ = 31465200. Its totient is φ = 13069944.

The previous prime is 20694239. The next prime is 20694263. The reversal of 20694249 is 94249602.

It is not a de Polignac number, because 20694249 - 2⁸ = 20693993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20694229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60339 + ... + 60680.

It is an arithmetic number, because the mean of its divisors is an integer number (2622100).

Almost surely, 2^20694249 is an apocalyptic number.

It is an amenable number.

20694249 is a deficient number, since it is larger than the sum of its proper divisors (10770951).

20694249 is a wasteful number, since it uses less digits than its factorization.

20694249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121044 (or 121041 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 20694249 is about 4549.0932063434. The cubic root of 20694249 is about 274.5469078864.

The spelling of 20694249 in words is "twenty million, six hundred ninety-four thousand, two hundred forty-nine".