20283967 has 4 divisors (see below), whose sum is σ = 22127976. Its totient is φ = 18439960.

The previous prime is 20283959. The next prime is 20283973. The reversal of 20283967 is 76938202.

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

It is not a de Polignac number, because 20283967 - 2³ = 20283959 is a prime.

It is a super-2 number, since 2×20283967² = 822878634514178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20283947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921988 + ... + 922009.

It is an arithmetic number, because the mean of its divisors is an integer number (5531994).

Almost surely, 2^20283967 is an apocalyptic number.

20283967 is a deficient number, since it is larger than the sum of its proper divisors (1844009).

20283967 is a wasteful number, since it uses less digits than its factorization.

20283967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844008.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 20283967 is about 4503.7725297799. The cubic root of 20283967 is about 272.7204041267.

It can be divided in two parts, 2028 and 3967, that added together give a palindrome (5995).

The spelling of 20283967 in words is "twenty million, two hundred eighty-three thousand, nine hundred sixty-seven".