20153450 has 24 divisors (see below), whose sum is σ = 37845792. Its totient is φ = 7983920.

The previous prime is 20153443. The next prime is 20153461. The reversal of 20153450 is 5435102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3467 + ... + 7233.

It is an arithmetic number, because the mean of its divisors is an integer number (1576908).

Almost surely, 2^20153450 is an apocalyptic number.

20153450 is a deficient number, since it is larger than the sum of its proper divisors (17692342).

20153450 is a wasteful number, since it uses less digits than its factorization.

20153450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3886 (or 3881 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 20153450 is about 4489.2594044007. The cubic root of 20153450 is about 272.1342060463.

Adding to 20153450 its reverse (5435102), we get a palindrome (25588552).

The spelling of 20153450 in words is "twenty million, one hundred fifty-three thousand, four hundred fifty".