20149467 has 8 divisors (see below), whose sum is σ = 28932624. Its totient is φ = 12399648.

The previous prime is 20149457. The next prime is 20149469. The reversal of 20149467 is 76494102.

It is a happy number.

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

It is not a de Polignac number, because 20149467 - 2⁸ = 20149211 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (20149469) 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, 258288 + ... + 258365.

It is an arithmetic number, because the mean of its divisors is an integer number (3616578).

Almost surely, 2^20149467 is an apocalyptic number.

20149467 is a deficient number, since it is larger than the sum of its proper divisors (8783157).

20149467 is a wasteful number, since it uses less digits than its factorization.

20149467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516669.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 20149467 is about 4488.8157681063. The cubic root of 20149467 is about 272.1162772392.

The spelling of 20149467 in words is "twenty million, one hundred forty-nine thousand, four hundred sixty-seven".