220003998 has 16 divisors (see below), whose sum is σ = 451900560. Its totient is φ = 71352576.

The previous prime is 220003997. The next prime is 220004011. The reversal of 220003998 is 899300022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220003997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 495283 + ... + 495726.

It is an arithmetic number, because the mean of its divisors is an integer number (28243785).

Almost surely, 2^220003998 is an apocalyptic number.

220003998 is an abundant number, since it is smaller than the sum of its proper divisors (231896562).

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

220003998 is a wasteful number, since it uses less digits than its factorization.

220003998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991051.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 220003998 is about 14832.5317461315. The cubic root of 220003998 is about 603.6847305015.

The spelling of 220003998 in words is "two hundred twenty million, three thousand, nine hundred ninety-eight".