212488761 has 8 divisors (see below), whose sum is σ = 298229920. Its totient is φ = 134203392.

The previous prime is 212488741. The next prime is 212488811. The reversal of 212488761 is 167884212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212488761 - 2¹¹ = 212486713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212488721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1863880 + ... + 1863993.

It is an arithmetic number, because the mean of its divisors is an integer number (37278740).

Almost surely, 2^212488761 is an apocalyptic number.

It is an amenable number.

212488761 is a deficient number, since it is larger than the sum of its proper divisors (85741159).

212488761 is a wasteful number, since it uses less digits than its factorization.

212488761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3727895.

The product of its digits is 43008, while the sum is 39.

The square root of 212488761 is about 14576.9942374963. The cubic root of 212488761 is about 596.7310753409.

The spelling of 212488761 in words is "two hundred twelve million, four hundred eighty-eight thousand, seven hundred sixty-one".