216348810 has 32 divisors (see below), whose sum is σ = 541814400. Its totient is φ = 55184448.

The previous prime is 216348791. The next prime is 216348823. The reversal of 216348810 is 18843612.

It is a super-2 number, since 2×216348810² = 93613615176832200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156085 + ... + 157464.

It is an arithmetic number, because the mean of its divisors is an integer number (16931700).

Almost surely, 2^216348810 is an apocalyptic number.

216348810 is an abundant number, since it is smaller than the sum of its proper divisors (325465590).

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

216348810 is a wasteful number, since it uses less digits than its factorization.

216348810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313582.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 216348810 is about 14708.8004269553. The cubic root of 216348810 is about 600.3227985263.

The spelling of 216348810 in words is "two hundred sixteen million, three hundred forty-eight thousand, eight hundred ten".