20067951 has 4 divisors (see below), whose sum is σ = 26757272. Its totient is φ = 13378632.

The previous prime is 20067923. The next prime is 20067959. The reversal of 20067951 is 15976002.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20067951 - 2¹⁷ = 19936879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20067959) 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, 3344656 + ... + 3344661.

It is an arithmetic number, because the mean of its divisors is an integer number (6689318).

Almost surely, 2^20067951 is an apocalyptic number.

20067951 is a deficient number, since it is larger than the sum of its proper divisors (6689321).

20067951 is an equidigital number, since it uses as much as digits as its factorization.

20067951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6689320.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 20067951 is about 4479.7266657688. The cubic root of 20067951 is about 271.7488264847.

The spelling of 20067951 in words is "twenty million, sixty-seven thousand, nine hundred fifty-one".