20933146 has 8 divisors (see below), whose sum is σ = 33815124. Its totient is φ = 9661440.

The previous prime is 20933111. The next prime is 20933147. The reversal of 20933146 is 64133902.

It can be written as a sum of positive squares in 2 ways, for example, as 20602521 + 330625 = 4539^2 + 575^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20933147) 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, 402535 + ... + 402586.

Almost surely, 2^20933146 is an apocalyptic number.

20933146 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20933146 is a deficient number, since it is larger than the sum of its proper divisors (12881978).

20933146 is a wasteful number, since it uses less digits than its factorization.

20933146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805136.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 20933146 is about 4575.2755108299. The cubic root of 20933146 is about 275.5993363805.

The spelling of 20933146 in words is "twenty million, nine hundred thirty-three thousand, one hundred forty-six".