20087954 has 8 divisors (see below), whose sum is σ = 30700620. Its totient is φ = 9854416.

The previous prime is 20087953. The next prime is 20087989. The reversal of 20087954 is 45978002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19404025 + 683929 = 4405^2 + 827^2 .

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

It is a super-2 number, since 2×20087954² = 807051791812232, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20087953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94649 + ... + 94860.

Almost surely, 2^20087954 is an apocalyptic number.

20087954 is a deficient number, since it is larger than the sum of its proper divisors (10612666).

20087954 is a wasteful number, since it uses less digits than its factorization.

20087954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189564.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 20087954 is about 4481.9587235940. The cubic root of 20087954 is about 271.8390862677.

The spelling of 20087954 in words is "twenty million, eighty-seven thousand, nine hundred fifty-four".