20148453 has 32 divisors (see below), whose sum is σ = 32457600. Its totient is φ = 12279168.

The previous prime is 20148449. The next prime is 20148473. The reversal of 20148453 is 35484102.

20148453 is a `hidden beast` number, since 201 + 4 + 8 + 453 = 666.

It is not a de Polignac number, because 20148453 - 2² = 20148449 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20148413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47878 + ... + 48296.

It is an arithmetic number, because the mean of its divisors is an integer number (1014300).

Almost surely, 2^20148453 is an apocalyptic number.

It is an amenable number.

20148453 is a deficient number, since it is larger than the sum of its proper divisors (12309147).

20148453 is a wasteful number, since it uses less digits than its factorization.

20148453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578 (or 572 counting only the distinct ones).

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

The square root of 20148453 is about 4488.7028193009. The cubic root of 20148453 is about 272.1117125107. Note that the first 3 decimals are identical.

The spelling of 20148453 in words is "twenty million, one hundred forty-eight thousand, four hundred fifty-three".