216486722 has 16 divisors (see below), whose sum is σ = 343340640. Its totient is φ = 102090528.

The previous prime is 216486713. The next prime is 216486731. The reversal of 216486722 is 227684612.

216486722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (216486713) and next prime (216486731).

It is a Harshad number since it is a multiple of its sum of digits (38).

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, 3923 + ... + 21174.

It is an arithmetic number, because the mean of its divisors is an integer number (21458790).

Almost surely, 2^216486722 is an apocalyptic number.

216486722 is a deficient number, since it is larger than the sum of its proper divisors (126853918).

216486722 is a wasteful number, since it uses less digits than its factorization.

216486722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25345.

The product of its digits is 64512, while the sum is 38.

The square root of 216486722 is about 14713.4877578363. The cubic root of 216486722 is about 600.4503304381.

The spelling of 216486722 in words is "two hundred sixteen million, four hundred eighty-six thousand, seven hundred twenty-two".