212796506 has 16 divisors (see below), whose sum is σ = 358694784. Its totient is φ = 93943344.

The previous prime is 212796499. The next prime is 212796553. The reversal of 212796506 is 605697212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 212796506.

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 7 ways as a sum of consecutive naturals, for example, 177326 + ... + 178521.

It is an arithmetic number, because the mean of its divisors is an integer number (22418424).

Almost surely, 2^212796506 is an apocalyptic number.

212796506 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

212796506 is a deficient number, since it is larger than the sum of its proper divisors (145898278).

212796506 is a wasteful number, since it uses less digits than its factorization.

212796506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355885.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 212796506 is about 14587.5462638512. The cubic root of 212796506 is about 597.0190159361.

The spelling of 212796506 in words is "two hundred twelve million, seven hundred ninety-six thousand, five hundred six".