20494141 has 8 divisors (see below), whose sum is σ = 21620480. Its totient is φ = 19372608.

The previous prime is 20494139. The next prime is 20494147. The reversal of 20494141 is 14149402.

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 20494141 - 2¹ = 20494139 is a prime.

It is a super-3 number, since 3×20494141³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20494147) 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, 10645 + ... + 12421.

It is an arithmetic number, because the mean of its divisors is an integer number (2702560).

Almost surely, 2^20494141 is an apocalyptic number.

It is an amenable number.

20494141 is a deficient number, since it is larger than the sum of its proper divisors (1126339).

20494141 is a wasteful number, since it uses less digits than its factorization.

20494141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 20494141 is about 4527.0455045206. The cubic root of 20494141 is about 273.6591077354.

The spelling of 20494141 in words is "twenty million, four hundred ninety-four thousand, one hundred forty-one".