20527090 has 8 divisors (see below), whose sum is σ = 36948780. Its totient is φ = 8210832.

The previous prime is 20527057. The next prime is 20527093. The reversal of 20527090 is 9072502.

It can be written as a sum of positive squares in 2 ways, for example, as 19722481 + 804609 = 4441^2 + 897^2 .

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

It is a super-2 number, since 2×20527090² = 842722847736200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20527093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1026345 + ... + 1026364.

Almost surely, 2^20527090 is an apocalyptic number.

20527090 is a deficient number, since it is larger than the sum of its proper divisors (16421690).

20527090 is a wasteful number, since it uses less digits than its factorization.

20527090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052716.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 20527090 is about 4530.6831714434. The cubic root of 20527090 is about 273.8056856617.

Adding to 20527090 its reverse (9072502), we get a palindrome (29599592).

The spelling of 20527090 in words is "twenty million, five hundred twenty-seven thousand, ninety".