20481877 has 8 divisors (see below), whose sum is σ = 22118040. Its totient is φ = 18854400.

The previous prime is 20481871. The next prime is 20481887. The reversal of 20481877 is 77818402.

It can be written as a sum of positive squares in 4 ways, for example, as 2283121 + 18198756 = 1511^2 + 4266^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20481877 - 2¹⁵ = 20449109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20481871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3249 + ... + 7177.

It is an arithmetic number, because the mean of its divisors is an integer number (2764755).

Almost surely, 2^20481877 is an apocalyptic number.

It is an amenable number.

20481877 is a deficient number, since it is larger than the sum of its proper divisors (1636163).

20481877 is a wasteful number, since it uses less digits than its factorization.

20481877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4343.

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 20481877 is about 4525.6907760032. The cubic root of 20481877 is about 273.6045096110.

The spelling of 20481877 in words is "twenty million, four hundred eighty-one thousand, eight hundred seventy-seven".