20493454 has 8 divisors (see below), whose sum is σ = 31012560. Its totient is φ = 10155936.

The previous prime is 20493443. The next prime is 20493461. The reversal of 20493454 is 45439402.

It is a happy number.

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

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, 45114 + ... + 45565.

It is an arithmetic number, because the mean of its divisors is an integer number (3876570).

Almost surely, 2^20493454 is an apocalyptic number.

20493454 is a deficient number, since it is larger than the sum of its proper divisors (10519106).

20493454 is a wasteful number, since it uses less digits than its factorization.

20493454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90794.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 20493454 is about 4526.9696265824. The cubic root of 20493454 is about 273.6560498548.

The spelling of 20493454 in words is "twenty million, four hundred ninety-three thousand, four hundred fifty-four".