20281810032 has 60 divisors (see below), whose sum is σ = 61920985464. Its totient is φ = 6146002560.

The previous prime is 20281810027. The next prime is 20281810049. The reversal of 20281810032 is 23001818202.

It is a super-2 number, since 2×20281810032² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20281809978 and 20281810005.

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, 6400503 + ... + 6403670.

Almost surely, 2^20281810032 is an apocalyptic number.

20281810032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20281810032 is an abundant number, since it is smaller than the sum of its proper divisors (41639175432).

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

20281810032 is a wasteful number, since it uses less digits than its factorization.

20281810032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12804198 (or 12804189 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The spelling of 20281810032 in words is "twenty billion, two hundred eighty-one million, eight hundred ten thousand, thirty-two".