400233040220 has 24 divisors (see below), whose sum is σ = 905142414624. Its totient is φ = 147778353216.

The previous prime is 400233040219. The next prime is 400233040237. The reversal of 400233040220 is 22040332004.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 400233040192 and 400233040201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 769678664 + ... + 769679183.

It is an arithmetic number, because the mean of its divisors is an integer number (37714267276).

Almost surely, 2^400233040220 is an apocalyptic number.

It is an amenable number.

400233040220 is an abundant number, since it is smaller than the sum of its proper divisors (504909374404).

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

400233040220 is a wasteful number, since it uses less digits than its factorization.

400233040220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539357869 (or 1539357867 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 400233040220 its reverse (22040332004), we get a palindrome (422273372224).

The spelling of 400233040220 in words is "four hundred billion, two hundred thirty-three million, forty thousand, two hundred twenty".