212630340 has 48 divisors (see below), whose sum is σ = 641164608. Its totient is φ = 52339584.

The previous prime is 212630309. The next prime is 212630359. The reversal of 212630340 is 43036212.

It is a happy number.

212630340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212630340² = 90423322977031200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135522 + ... + 137081.

It is an arithmetic number, because the mean of its divisors is an integer number (13357596).

Almost surely, 2^212630340 is an apocalyptic number.

212630340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212630340 is an abundant number, since it is smaller than the sum of its proper divisors (428534268).

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

212630340 is a wasteful number, since it uses less digits than its factorization.

212630340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272628 (or 272626 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 212630340 is about 14581.8496769100. The cubic root of 212630340 is about 596.8635777718.

Adding to 212630340 its reverse (43036212), we get a palindrome (255666552).

The spelling of 212630340 in words is "two hundred twelve million, six hundred thirty thousand, three hundred forty".