220327640 has 32 divisors (see below), whose sum is σ = 533872080. Its totient is φ = 81351552.

The previous prime is 220327621. The next prime is 220327661. The reversal of 220327640 is 46723022.

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 211334 + ... + 212373.

Almost surely, 2^220327640 is an apocalyptic number.

220327640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220327640 is an abundant number, since it is smaller than the sum of its proper divisors (313544440).

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

220327640 is a wasteful number, since it uses less digits than its factorization.

220327640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423731 (or 423727 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 220327640 is about 14843.4376072391. The cubic root of 220327640 is about 603.9806069530.

The spelling of 220327640 in words is "two hundred twenty million, three hundred twenty-seven thousand, six hundred forty".