220285740 has 48 divisors (see below), whose sum is σ = 638074080. Its totient is φ = 56716800.

The previous prime is 220285729. The next prime is 220285787. The reversal of 220285740 is 47582022.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 220285698 and 220285707.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61561 + ... + 65040.

It is an arithmetic number, because the mean of its divisors is an integer number (13293210).

Almost surely, 2^220285740 is an apocalyptic number.

220285740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220285740 is an abundant number, since it is smaller than the sum of its proper divisors (417788340).

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

220285740 is a wasteful number, since it uses less digits than its factorization.

220285740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126642 (or 126640 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 220285740 is about 14842.0261420064. The cubic root of 220285740 is about 603.9423179276.

The spelling of 220285740 in words is "two hundred twenty million, two hundred eighty-five thousand, seven hundred forty".