20623011 has 8 divisors (see below), whose sum is σ = 27874320. Its totient is φ = 13560192.

The previous prime is 20623003. The next prime is 20623027. The reversal of 20623011 is 11032602.

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

It is not a de Polignac number, because 20623011 - 2³ = 20623003 is a prime.

It is a super-2 number, since 2×20623011² = 850617165412242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20623051) 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, 46866 + ... + 47303.

It is an arithmetic number, because the mean of its divisors is an integer number (3484290).

Almost surely, 2^20623011 is an apocalyptic number.

20623011 is a deficient number, since it is larger than the sum of its proper divisors (7251309).

20623011 is an equidigital number, since it uses as much as digits as its factorization.

20623011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94245.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 20623011 is about 4541.2565441736. The cubic root of 20623011 is about 274.2315117582.

Adding to 20623011 its reverse (11032602), we get a palindrome (31655613).

The spelling of 20623011 in words is "twenty million, six hundred twenty-three thousand, eleven".