216426100 has 36 divisors (see below), whose sum is σ = 512342208. Its totient is φ = 78700000.

The previous prime is 216426079. The next prime is 216426103. The reversal of 216426100 is 1624612.

It is a super-2 number, since 2×216426100² = 93680513522420000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216426103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97276 + ... + 99475.

It is an arithmetic number, because the mean of its divisors is an integer number (14231728).

Almost surely, 2^216426100 is an apocalyptic number.

216426100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216426100 is an abundant number, since it is smaller than the sum of its proper divisors (295916108).

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

216426100 is a wasteful number, since it uses less digits than its factorization.

216426100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196776 (or 196769 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 216426100 is about 14711.4275310046. The cubic root of 216426100 is about 600.3942778885.

The spelling of 216426100 in words is "two hundred sixteen million, four hundred twenty-six thousand, one hundred".