20427100 has 36 divisors (see below), whose sum is σ = 44528400. Its totient is φ = 8133760.

The previous prime is 20427089. The next prime is 20427119. The reversal of 20427100 is 172402.

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, 35616 + ... + 36184.

It is an arithmetic number, because the mean of its divisors is an integer number (1236900).

Almost surely, 2^20427100 is an apocalyptic number.

20427100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20427100 is an abundant number, since it is smaller than the sum of its proper divisors (24101300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20427100 is a wasteful number, since it uses less digits than its factorization.

20427100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942 (or 935 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 20427100 is about 4519.6349410102. The cubic root of 20427100 is about 273.3603813540.

Adding to 20427100 its reverse (172402), we get a palindrome (20599502).

The spelling of 20427100 in words is "twenty million, four hundred twenty-seven thousand, one hundred".