212755880 has 16 divisors (see below), whose sum is σ = 478700820. Its totient is φ = 85102336.

The previous prime is 212755859. The next prime is 212755891. The reversal of 212755880 is 88557212.

It is a happy number.

212755880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 192487876 + 20268004 = 13874^2 + 4502^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2659409 + ... + 2659488.

Almost surely, 2^212755880 is an apocalyptic number.

212755880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212755880 is an abundant number, since it is smaller than the sum of its proper divisors (265944940).

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

212755880 is a wasteful number, since it uses less digits than its factorization.

212755880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5318908 (or 5318904 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 212755880 is about 14586.1537082262. The cubic root of 212755880 is about 596.9810202650.

The spelling of 212755880 in words is "two hundred twelve million, seven hundred fifty-five thousand, eight hundred eighty".