20282345 has 8 divisors (see below), whose sum is σ = 24413064. Its totient is φ = 16176384.

The previous prime is 20282341. The next prime is 20282351. The reversal of 20282345 is 54328202.

It can be written as a sum of positive squares in 4 ways, for example, as 426409 + 19855936 = 653^2 + 4456^2 .

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 20282345 - 2² = 20282341 is a prime.

It is a super-2 number, since 2×20282345² = 822747037398050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20282341) 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, 4334 + ... + 7703.

It is an arithmetic number, because the mean of its divisors is an integer number (3051633).

Almost surely, 2^20282345 is an apocalyptic number.

It is an amenable number.

20282345 is a deficient number, since it is larger than the sum of its proper divisors (4130719).

20282345 is a wasteful number, since it uses less digits than its factorization.

20282345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12379.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 20282345 is about 4503.5924549186. The cubic root of 20282345 is about 272.7131346038.

The spelling of 20282345 in words is "twenty million, two hundred eighty-two thousand, three hundred forty-five".