20245970 has 8 divisors (see below), whose sum is σ = 36442764. Its totient is φ = 8098384.

The previous prime is 20245943. The next prime is 20245999. The reversal of 20245970 is 7954202.

It can be written as a sum of positive squares in 2 ways, for example, as 18088009 + 2157961 = 4253^2 + 1469^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1012289 + ... + 1012308.

Almost surely, 2^20245970 is an apocalyptic number.

20245970 is a deficient number, since it is larger than the sum of its proper divisors (16196794).

20245970 is a wasteful number, since it uses less digits than its factorization.

20245970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2024604.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 20245970 is about 4499.5521999417. The cubic root of 20245970 is about 272.5500062536.

The spelling of 20245970 in words is "twenty million, two hundred forty-five thousand, nine hundred seventy".