20449146 has 8 divisors (see below), whose sum is σ = 40898304. Its totient is φ = 6816380.

The previous prime is 20449133. The next prime is 20449151. The reversal of 20449146 is 64194402.

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

20449146 is an admirable 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, 1704090 + ... + 1704101.

It is an arithmetic number, because the mean of its divisors is an integer number (5112288).

Almost surely, 2^20449146 is an apocalyptic number.

20449146 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20449146 is a wasteful number, since it uses less digits than its factorization.

20449146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3408196.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 20449146 is about 4522.0731971077. The cubic root of 20449146 is about 273.4586876273.

The spelling of 20449146 in words is "twenty million, four hundred forty-nine thousand, one hundred forty-six".