20294491 has 8 divisors (see below), whose sum is σ = 23942144. Its totient is φ = 16833960.

The previous prime is 20294479. The next prime is 20294507. The reversal of 20294491 is 19449202.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20294491 - 2⁷ = 20294363 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20294401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46545 + ... + 46978.

It is an arithmetic number, because the mean of its divisors is an integer number (2992768).

Almost surely, 2^20294491 is an apocalyptic number.

20294491 is a deficient number, since it is larger than the sum of its proper divisors (3647653).

20294491 is an equidigital number, since it uses as much as digits as its factorization.

20294491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93561.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 20294491 is about 4504.9407321296. The cubic root of 20294491 is about 272.7675614588.

The spelling of 20294491 in words is "twenty million, two hundred ninety-four thousand, four hundred ninety-one".