216378710 has 32 divisors (see below), whose sum is σ = 407531520. Its totient is φ = 82561248.

The previous prime is 216378691. The next prime is 216378719. The reversal of 216378710 is 17873612.

It is a super-2 number, since 2×216378710² = 93639492282528200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216378719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99899 + ... + 102041.

It is an arithmetic number, because the mean of its divisors is an integer number (12735360).

Almost surely, 2^216378710 is an apocalyptic number.

216378710 is a deficient number, since it is larger than the sum of its proper divisors (191152810).

216378710 is a wasteful number, since it uses less digits than its factorization.

216378710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2612.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 216378710 is about 14709.8167901575. The cubic root of 216378710 is about 600.3504526724.

The spelling of 216378710 in words is "two hundred sixteen million, three hundred seventy-eight thousand, seven hundred ten".