218747046 has 16 divisors (see below), whose sum is σ = 499993344. Its totient is φ = 62499144.

The previous prime is 218747021. The next prime is 218747069. The reversal of 218747046 is 640747812.

It is a super-2 number, since 2×218747046² = 95700540267452232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 218746995 and 218747013.

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, 2604090 + ... + 2604173.

It is an arithmetic number, because the mean of its divisors is an integer number (31249584).

Almost surely, 2^218747046 is an apocalyptic number.

218747046 is an abundant number, since it is smaller than the sum of its proper divisors (281246298).

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

218747046 is a wasteful number, since it uses less digits than its factorization.

218747046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5208275.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 218747046 is about 14790.0995939852. The cubic root of 218747046 is about 602.5328538182.

It can be divided in two parts, 21874 and 7046, that added together give a triangular number (28920 = T₂₄₀).

The spelling of 218747046 in words is "two hundred eighteen million, seven hundred forty-seven thousand, forty-six".