20438794 has 32 divisors (see below), whose sum is σ = 35380800. Its totient is φ = 8789760.

The previous prime is 20438791. The next prime is 20438809. The reversal of 20438794 is 49783402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20438791) 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, 18189 + ... + 19279.

It is an arithmetic number, because the mean of its divisors is an integer number (1105650).

Almost surely, 2^20438794 is an apocalyptic number.

20438794 is a deficient number, since it is larger than the sum of its proper divisors (14942006).

20438794 is a wasteful number, since it uses less digits than its factorization.

20438794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 20438794 is about 4520.9284444680. The cubic root of 20438794 is about 273.4125353796.

The spelling of 20438794 in words is "twenty million, four hundred thirty-eight thousand, seven hundred ninety-four".