212740788 has 96 divisors (see below), whose sum is σ = 572552064. Its totient is φ = 60899328.

The previous prime is 212740783. The next prime is 212740807. The reversal of 212740788 is 887047212.

212740788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212740783) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256831 + ... + 257657.

It is an arithmetic number, because the mean of its divisors is an integer number (5964084).

Almost surely, 2^212740788 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212740788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286276032).

212740788 is an abundant number, since it is smaller than the sum of its proper divisors (359811276).

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

212740788 is a wasteful number, since it uses less digits than its factorization.

212740788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961 (or 959 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 39.

The square root of 212740788 is about 14585.6363591034. The cubic root of 212740788 is about 596.9669041637.

The spelling of 212740788 in words is "two hundred twelve million, seven hundred forty thousand, seven hundred eighty-eight".