212769312 has 48 divisors (see below), whose sum is σ = 638309952. Its totient is φ = 60791040.

The previous prime is 212769307. The next prime is 212769313. The reversal of 212769312 is 213967212.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (212769313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157639 + ... + 158982.

It is an arithmetic number, because the mean of its divisors is an integer number (13298124).

Almost surely, 2^212769312 is an apocalyptic number.

It is an amenable number.

212769312 is an abundant number, since it is smaller than the sum of its proper divisors (425540640).

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

212769312 is a wasteful number, since it uses less digits than its factorization.

212769312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316641 (or 316633 counting only the distinct ones).

The product of its digits is 9072, while the sum is 33.

The square root of 212769312 is about 14586.6141376263. The cubic root of 212769312 is about 596.9935831458.

The spelling of 212769312 in words is "two hundred twelve million, seven hundred sixty-nine thousand, three hundred twelve".