20673153 has 12 divisors (see below), whose sum is σ = 30556240. Its totient is φ = 13461336.

The previous prime is 20673151. The next prime is 20673157. The reversal of 20673153 is 35137602.

It is a happy number.

It is not a de Polignac number, because 20673153 - 2¹ = 20673151 is a prime.

It is a super-2 number, since 2×20673153² = 854758509922818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20673151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26323 + ... + 27096.

Almost surely, 2^20673153 is an apocalyptic number.

It is an amenable number.

20673153 is a deficient number, since it is larger than the sum of its proper divisors (9883087).

20673153 is a wasteful number, since it uses less digits than its factorization.

20673153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53468 (or 53465 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 20673153 is about 4546.7739112474. The cubic root of 20673153 is about 274.4535838784.

The spelling of 20673153 in words is "twenty million, six hundred seventy-three thousand, one hundred fifty-three".