20290526 has 8 divisors (see below), whose sum is σ = 30488400. Its totient is φ = 10127728.

The previous prime is 20290519. The next prime is 20290553. The reversal of 20290526 is 62509202.

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

It is a Curzon number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 20290495 and 20290504.

It is a congruent number.

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, 7271 + ... + 9666.

It is an arithmetic number, because the mean of its divisors is an integer number (3811050).

Almost surely, 2^20290526 is an apocalyptic number.

20290526 is a deficient number, since it is larger than the sum of its proper divisors (10197874).

20290526 is a wasteful number, since it uses less digits than its factorization.

20290526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17538.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 20290526 is about 4504.5006382506. The cubic root of 20290526 is about 272.7497964765.

Adding to 20290526 its reverse (62509202), we get a palindrome (82799728).

The spelling of 20290526 in words is "twenty million, two hundred ninety thousand, five hundred twenty-six".