20892140 has 36 divisors (see below), whose sum is σ = 45376128. Its totient is φ = 8079840.

The previous prime is 20892121. The next prime is 20892143. The reversal of 20892140 is 4129802.

It is not an unprimeable number, because it can be changed into a prime (20892143) 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, 18677 + ... + 19763.

It is an arithmetic number, because the mean of its divisors is an integer number (1260448).

Almost surely, 2^20892140 is an apocalyptic number.

20892140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20892140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22688064).

20892140 is an abundant number, since it is smaller than the sum of its proper divisors (24483988).

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

20892140 is a wasteful number, since it uses less digits than its factorization.

20892140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158 (or 1125 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 20892140 is about 4570.7920539005. The cubic root of 20892140 is about 275.4192613015.

The spelling of 20892140 in words is "twenty million, eight hundred ninety-two thousand, one hundred forty".