220308407 has 8 divisors (see below), whose sum is σ = 241727760. Its totient is φ = 199120960.

The previous prime is 220308391. The next prime is 220308443. The reversal of 220308407 is 704803022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220308407 - 2⁴ = 220308391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220308107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55982 + ... + 59787.

It is an arithmetic number, because the mean of its divisors is an integer number (30215970).

Almost surely, 2^220308407 is an apocalyptic number.

220308407 is a deficient number, since it is larger than the sum of its proper divisors (21419353).

220308407 is a wasteful number, since it uses less digits than its factorization.

220308407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115953.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 220308407 is about 14842.7897310445. The cubic root of 220308407 is about 603.9630320707.

The spelling of 220308407 in words is "two hundred twenty million, three hundred eight thousand, four hundred seven".