20284440006460 has 24 divisors (see below), whose sum is σ = 48682656015840. Its totient is φ = 6954665145024.

The previous prime is 20284440006407. The next prime is 20284440006461. The reversal of 20284440006460 is 6460004448202.

It is a happy number.

It is a super-2 number, since 2×20284440006460² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20284440006461) 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, 72444428455 + ... + 72444428734.

It is an arithmetic number, because the mean of its divisors is an integer number (2028444000660).

Almost surely, 2^{20284440006460} is an apocalyptic number.

20284440006460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20284440006460 is an abundant number, since it is smaller than the sum of its proper divisors (28398216009380).

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

20284440006460 is a wasteful number, since it uses less digits than its factorization.

20284440006460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144888857205 (or 144888857203 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 40.

The spelling of 20284440006460 in words is "twenty trillion, two hundred eighty-four billion, four hundred forty million, six thousand, four hundred sixty".