20400110 has 24 divisors (see below), whose sum is σ = 38761416. Its totient is φ = 7729200.

The previous prime is 20400101. The next prime is 20400151. The reversal of 20400110 is 1100402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 785 + ... + 6435.

It is an arithmetic number, because the mean of its divisors is an integer number (1615059).

Almost surely, 2^20400110 is an apocalyptic number.

20400110 is a deficient number, since it is larger than the sum of its proper divisors (18361306).

20400110 is a wasteful number, since it uses less digits than its factorization.

20400110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5696 (or 5677 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 20400110 is about 4516.6480934427. The cubic root of 20400110 is about 273.2399327252.

Adding to 20400110 its reverse (1100402), we get a palindrome (21500512).

The spelling of 20400110 in words is "twenty million, four hundred thousand, one hundred ten".