240220020 has 24 divisors (see below), whose sum is σ = 672616224. Its totient is φ = 64058656.

The previous prime is 240220007. The next prime is 240220031. The reversal of 240220020 is 20022042.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 240219978 and 240220005.

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, 2001774 + ... + 2001893.

It is an arithmetic number, because the mean of its divisors is an integer number (28025676).

Almost surely, 2^240220020 is an apocalyptic number.

240220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240220020 is an abundant number, since it is smaller than the sum of its proper divisors (432396204).

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

240220020 is a wasteful number, since it uses less digits than its factorization.

240220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003679 (or 4003677 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 240220020 is about 15499.0328730537. The cubic root of 240220020 is about 621.6363468822.

Adding to 240220020 its reverse (20022042), we get a palindrome (260242062).

It can be divided in two parts, 2402 and 20020, that added together give a palindrome (22422).

The spelling of 240220020 in words is "two hundred forty million, two hundred twenty thousand, twenty".