220500240 has 40 divisors (see below), whose sum is σ = 683551488. Its totient is φ = 58800000.

The previous prime is 220500221. The next prime is 220500277. The reversal of 220500240 is 42005022.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 459136 + ... + 459615.

Almost surely, 2^220500240 is an apocalyptic number.

220500240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220500240 is an abundant number, since it is smaller than the sum of its proper divisors (463051248).

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

220500240 is a wasteful number, since it uses less digits than its factorization.

220500240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918767 (or 918761 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 220500240 is about 14849.2504861357. The cubic root of 220500240 is about 604.1382809864.

Adding to 220500240 its reverse (42005022), we get a palindrome (262505262).

The spelling of 220500240 in words is "two hundred twenty million, five hundred thousand, two hundred forty".