212978735 has 16 divisors (see below), whose sum is σ = 267079680. Its totient is φ = 162734880.

The previous prime is 212978713. The next prime is 212978767. The reversal of 212978735 is 537879212.

It is not a de Polignac number, because 212978735 - 2¹⁶ = 212913199 is a prime.

It is a congruent number.

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, 144050 + ... + 145520.

It is an arithmetic number, because the mean of its divisors is an integer number (16692480).

Almost surely, 2^212978735 is an apocalyptic number.

212978735 is a deficient number, since it is larger than the sum of its proper divisors (54100945).

212978735 is a wasteful number, since it uses less digits than its factorization.

212978735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2758.

The product of its digits is 211680, while the sum is 44.

The square root of 212978735 is about 14593.7909742465. The cubic root of 212978735 is about 597.1893870568.

The spelling of 212978735 in words is "two hundred twelve million, nine hundred seventy-eight thousand, seven hundred thirty-five".