220235040 has 72 divisors (see below), whose sum is σ = 751556988. Its totient is φ = 58728960.

The previous prime is 220235021. The next prime is 220235053. The reversal of 220235040 is 40532022.

It can be written as a sum of positive squares in 2 ways, for example, as 207014544 + 13220496 = 14388^2 + 3636^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 75031 + ... + 77910.

Almost surely, 2^220235040 is an apocalyptic number.

220235040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220235040 is an abundant number, since it is smaller than the sum of its proper divisors (531321948).

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

220235040 is a wasteful number, since it uses less digits than its factorization.

220235040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152962 (or 152951 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 220235040 is about 14840.3180558909. The cubic root of 220235040 is about 603.8959808006.

Adding to 220235040 its reverse (40532022), we get a palindrome (260767062).

The spelling of 220235040 in words is "two hundred twenty million, two hundred thirty-five thousand, forty".