211407146 has 4 divisors (see below), whose sum is σ = 317110722. Its totient is φ = 105703572.

The previous prime is 211407127. The next prime is 211407173. The reversal of 211407146 is 641704112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 197262025 + 14145121 = 14045^2 + 3761^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 52851785 + ... + 52851788.

Almost surely, 2^211407146 is an apocalyptic number.

211407146 is a deficient number, since it is larger than the sum of its proper divisors (105703576).

211407146 is a wasteful number, since it uses less digits than its factorization.

211407146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105703575.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 211407146 is about 14539.8468355069. The cubic root of 211407146 is about 595.7168546053.

The spelling of 211407146 in words is "two hundred eleven million, four hundred seven thousand, one hundred forty-six".