20449454 has 8 divisors (see below), whose sum is σ = 30720648. Its totient is φ = 10209240.

The previous prime is 20449433. The next prime is 20449469. The reversal of 20449454 is 45494402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20449454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6017 + ... + 8780.

It is an arithmetic number, because the mean of its divisors is an integer number (3840081).

Almost surely, 2^20449454 is an apocalyptic number.

20449454 is a deficient number, since it is larger than the sum of its proper divisors (10271194).

20449454 is a wasteful number, since it uses less digits than its factorization.

20449454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15490.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 20449454 is about 4522.1072521558. The cubic root of 20449454 is about 273.4600605429.

The spelling of 20449454 in words is "twenty million, four hundred forty-nine thousand, four hundred fifty-four".