20495154 has 32 divisors (see below), whose sum is σ = 42577920. Its totient is φ = 6570000.

The previous prime is 20495119. The next prime is 20495159. The reversal of 20495154 is 45159402.

It is not an unprimeable number, because it can be changed into a prime (20495159) 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 15 ways as a sum of consecutive naturals, for example, 46467 + ... + 46905.

It is an arithmetic number, because the mean of its divisors is an integer number (1330560).

Almost surely, 2^20495154 is an apocalyptic number.

20495154 is an abundant number, since it is smaller than the sum of its proper divisors (22082766).

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

20495154 is a wasteful number, since it uses less digits than its factorization.

20495154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 20495154 is about 4527.1573862635. The cubic root of 20495154 is about 273.6636165380.

The spelling of 20495154 in words is "twenty million, four hundred ninety-five thousand, one hundred fifty-four".