223420505140 has 48 divisors (see below), whose sum is σ = 542996697600. Its totient is φ = 75631675392.

The previous prime is 223420505071. The next prime is 223420505141. The reversal of 223420505140 is 41505024322.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 223420505099 and 223420505108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223420505141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10089325 + ... + 10111444.

It is an arithmetic number, because the mean of its divisors is an integer number (11312431200).

Almost surely, 2^223420505140 is an apocalyptic number.

223420505140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223420505140 is an abundant number, since it is smaller than the sum of its proper divisors (319576192460).

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

223420505140 is a wasteful number, since it uses less digits than its factorization.

223420505140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20200864 (or 20200862 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 223420505140 its reverse (41505024322), we get a palindrome (264925529462).

The spelling of 223420505140 in words is "two hundred twenty-three billion, four hundred twenty million, five hundred five thousand, one hundred forty".