212432745 has 64 divisors (see below), whose sum is σ = 403107840. Its totient is φ = 93520128.

The previous prime is 212432741. The next prime is 212432747. The reversal of 212432745 is 547234212.

It is not a de Polignac number, because 212432745 - 2² = 212432741 is a prime.

It is a super-2 number, since 2×212432745² = 90255342296470050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212432741) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 328012 + ... + 328658.

It is an arithmetic number, because the mean of its divisors is an integer number (6298560).

Almost surely, 2^212432745 is an apocalyptic number.

It is an amenable number.

212432745 is a deficient number, since it is larger than the sum of its proper divisors (190675095).

212432745 is a wasteful number, since it uses less digits than its factorization.

212432745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774.

The product of its digits is 13440, while the sum is 30.

The square root of 212432745 is about 14575.0727270913. The cubic root of 212432745 is about 596.6786342526.

Adding to 212432745 its reverse (547234212), we get a palindrome (759666957).

The spelling of 212432745 in words is "two hundred twelve million, four hundred thirty-two thousand, seven hundred forty-five".