20453464 has 8 divisors (see below), whose sum is σ = 38350260. Its totient is φ = 10226728.

The previous prime is 20453453. The next prime is 20453473. The reversal of 20453464 is 46435402.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278334 + ... + 1278349.

Almost surely, 2^20453464 is an apocalyptic number.

It is an amenable number.

20453464 is a deficient number, since it is larger than the sum of its proper divisors (17896796).

20453464 is a wasteful number, since it uses less digits than its factorization.

20453464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2556689 (or 2556685 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 20453464 is about 4522.5506077876. The cubic root of 20453464 is about 273.4779339325.

Adding to 20453464 its reverse (46435402), we get a palindrome (66888866).

The spelling of 20453464 in words is "twenty million, four hundred fifty-three thousand, four hundred sixty-four".