218994126 has 32 divisors (see below), whose sum is σ = 474435360. Its totient is φ = 66989184.

The previous prime is 218994107. The next prime is 218994143. The reversal of 218994126 is 621499812.

It is a congruent number.

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, 5380 + ... + 21608.

It is an arithmetic number, because the mean of its divisors is an integer number (14826105).

Almost surely, 2^218994126 is an apocalyptic number.

218994126 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

218994126 is an abundant number, since it is smaller than the sum of its proper divisors (255441234).

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

218994126 is a wasteful number, since it uses less digits than its factorization.

218994126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16420.

The product of its digits is 62208, while the sum is 42.

The square root of 218994126 is about 14798.4501215499. The cubic root of 218994126 is about 602.7596268622.

The spelling of 218994126 in words is "two hundred eighteen million, nine hundred ninety-four thousand, one hundred twenty-six".