205451396 has 6 divisors (see below), whose sum is σ = 359539950. Its totient is φ = 102725696.

The previous prime is 205451383. The next prime is 205451401. The reversal of 205451396 is 693154502.

It can be written as a sum of positive squares in only one way, i.e., 116337796 + 89113600 = 10786^2 + 9440^2 .

It is a super-2 number, since 2×205451396² = 84420552236697632, which contains 22 as substring.

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, 25681421 + ... + 25681428.

It is an arithmetic number, because the mean of its divisors is an integer number (59923325).

Almost surely, 2^205451396 is an apocalyptic number.

It is an amenable number.

205451396 is a deficient number, since it is larger than the sum of its proper divisors (154088554).

205451396 is a wasteful number, since it uses less digits than its factorization.

205451396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51362853 (or 51362851 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 205451396 is about 14333.5758274061. The cubic root of 205451396 is about 590.0693167626.

The spelling of 205451396 in words is "two hundred five million, four hundred fifty-one thousand, three hundred ninety-six".