20249804 has 24 divisors (see below), whose sum is σ = 37008048. Its totient is φ = 9685440.

The previous prime is 20249791. The next prime is 20249813. The reversal of 20249804 is 40894202.

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, 7907 + ... + 10149.

It is an arithmetic number, because the mean of its divisors is an integer number (1542002).

Almost surely, 2^20249804 is an apocalyptic number.

It is an amenable number.

20249804 is a deficient number, since it is larger than the sum of its proper divisors (16758244).

20249804 is a wasteful number, since it uses less digits than its factorization.

20249804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345 (or 2343 counting only the distinct ones).

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

The square root of 20249804 is about 4499.9782221695. The cubic root of 20249804 is about 272.5672095254.

The spelling of 20249804 in words is "twenty million, two hundred forty-nine thousand, eight hundred four".