20448153 has 32 divisors (see below), whose sum is σ = 33379200. Its totient is φ = 12371040.

The previous prime is 20448133. The next prime is 20448163. The reversal of 20448153 is 35184402.

It is not a de Polignac number, because 20448153 - 2²² = 16253849 is a prime.

It is a super-2 number, since 2×20448153² = 836253922222818, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20448133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35653 + ... + 36221.

It is an arithmetic number, because the mean of its divisors is an integer number (1043100).

Almost surely, 2^20448153 is an apocalyptic number.

It is an amenable number.

20448153 is a deficient number, since it is larger than the sum of its proper divisors (12931047).

20448153 is an equidigital number, since it uses as much as digits as its factorization.

20448153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611 (or 583 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 20448153 is about 4521.9634010018. The cubic root of 20448153 is about 273.4542612180.

The spelling of 20448153 in words is "twenty million, four hundred forty-eight thousand, one hundred fifty-three".