20275570 has 32 divisors (see below), whose sum is σ = 41989248. Its totient is φ = 6905088.

The previous prime is 20275547. The next prime is 20275573. The reversal of 20275570 is 7557202.

It is a super-2 number, since 2×20275570² = 822197477649800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20275573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10522 + ... + 12298.

It is an arithmetic number, because the mean of its divisors is an integer number (1312164).

Almost surely, 2^20275570 is an apocalyptic number.

20275570 is an abundant number, since it is smaller than the sum of its proper divisors (21713678).

20275570 is a wasteful number, since it uses less digits than its factorization.

20275570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954.

The product of its (nonzero) digits is 4900, while the sum is 28.

The square root of 20275570 is about 4502.8402147978. The cubic root of 20275570 is about 272.6827660370.

The spelling of 20275570 in words is "twenty million, two hundred seventy-five thousand, five hundred seventy".