220293451 has 16 divisors (see below), whose sum is σ = 259600320. Its totient is φ = 183006720.

The previous prime is 220293443. The next prime is 220293473. The reversal of 220293451 is 154392022.

It is a cyclic number.

It is not a de Polignac number, because 220293451 - 2³ = 220293443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220293431) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 42615 + ... + 47503.

It is an arithmetic number, because the mean of its divisors is an integer number (16225020).

Almost surely, 2^220293451 is an apocalyptic number.

220293451 is a deficient number, since it is larger than the sum of its proper divisors (39306869).

220293451 is a wasteful number, since it uses less digits than its factorization.

220293451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5094.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 220293451 is about 14842.2859088484. The cubic root of 220293451 is about 603.9493647522.

The spelling of 220293451 in words is "two hundred twenty million, two hundred ninety-three thousand, four hundred fifty-one".