213968452 has 6 divisors (see below), whose sum is σ = 374444798. Its totient is φ = 106984224.

The previous prime is 213968441. The next prime is 213968483. The reversal of 213968452 is 254869312.

It can be written as a sum of positive squares in only one way, i.e., 191158276 + 22810176 = 13826^2 + 4776^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26746053 + ... + 26746060.

Almost surely, 2^213968452 is an apocalyptic number.

It is an amenable number.

213968452 is a deficient number, since it is larger than the sum of its proper divisors (160476346).

213968452 is a wasteful number, since it uses less digits than its factorization.

213968452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53492117 (or 53492115 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 213968452 is about 14627.6605101431. The cubic root of 213968452 is about 598.1130086981.

It can be divided in two parts, 2139 and 68452, that multiplied together give a triangular number (146418828 = T₁₇₁₁₂).

The spelling of 213968452 in words is "two hundred thirteen million, nine hundred sixty-eight thousand, four hundred fifty-two".