216372936 has 32 divisors (see below), whose sum is σ = 582543360. Its totient is φ = 66576192.

The previous prime is 216372881. The next prime is 216372941. The reversal of 216372936 is 639273612.

216372936 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 216372894 and 216372903.

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, 346440 + ... + 347063.

It is an arithmetic number, because the mean of its divisors is an integer number (18204480).

Almost surely, 2^216372936 is an apocalyptic number.

216372936 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

216372936 is an abundant number, since it is smaller than the sum of its proper divisors (366170424).

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

216372936 is a wasteful number, since it uses less digits than its factorization.

216372936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693525 (or 693521 counting only the distinct ones).

The product of its digits is 81648, while the sum is 39.

The square root of 216372936 is about 14709.6205253569. The cubic root of 216372936 is about 600.3451125686.

The spelling of 216372936 in words is "two hundred sixteen million, three hundred seventy-two thousand, nine hundred thirty-six".