212738550 has 24 divisors (see below), whose sum is σ = 527591976. Its totient is φ = 56730240.

The previous prime is 212738543. The next prime is 212738551. The reversal of 212738550 is 55837212.

It is a super-2 number, since 2×212738550² = 90515381312205000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212738551) 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, 708979 + ... + 709278.

It is an arithmetic number, because the mean of its divisors is an integer number (21982999).

Almost surely, 2^212738550 is an apocalyptic number.

212738550 is an abundant number, since it is smaller than the sum of its proper divisors (314853426).

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

212738550 is a wasteful number, since it uses less digits than its factorization.

212738550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418272 (or 1418267 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 212738550 is about 14585.5596395887. The cubic root of 212738550 is about 596.9648108234.

The spelling of 212738550 in words is "two hundred twelve million, seven hundred thirty-eight thousand, five hundred fifty".