20623153 has 8 divisors (see below), whose sum is σ = 21346560. Its totient is φ = 19903440.

The previous prime is 20623139. The next prime is 20623181. The reversal of 20623153 is 35132602.

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

It is a cyclic number.

It is not a de Polignac number, because 20623153 - 2⁵ = 20623121 is a prime.

It is a super-2 number, since 2×20623153² = 850628879322818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20623103) 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, 15126 + ... + 16432.

It is an arithmetic number, because the mean of its divisors is an integer number (2668320).

Almost surely, 2^20623153 is an apocalyptic number.

It is an amenable number.

20623153 is a deficient number, since it is larger than the sum of its proper divisors (723407).

20623153 is a wasteful number, since it uses less digits than its factorization.

20623153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 20623153 is about 4541.2721785861. The cubic root of 20623153 is about 274.2321411650.

Adding to 20623153 its reverse (35132602), we get a palindrome (55755755).

The spelling of 20623153 in words is "twenty million, six hundred twenty-three thousand, one hundred fifty-three".