26993431 has 8 divisors (see below), whose sum is σ = 27432000. Its totient is φ = 26557440.

The previous prime is 26993423. The next prime is 26993437. The reversal of 26993431 is 13439962.

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

It is a cyclic number.

It is not a de Polignac number, because 26993431 - 2³ = 26993423 is a prime.

It is a super-2 number, since 2×26993431² = 1457290634303522, 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 (26993437) 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, 35091 + ... + 35851.

It is an arithmetic number, because the mean of its divisors is an integer number (3429000).

Almost surely, 2^26993431 is an apocalyptic number.

26993431 is a deficient number, since it is larger than the sum of its proper divisors (438569).

26993431 is an equidigital number, since it uses as much as digits as its factorization.

26993431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289.

The product of its digits is 34992, while the sum is 37.

The square root of 26993431 is about 5195.5202819352. The cubic root of 26993431 is about 299.9756683970.

The spelling of 26993431 in words is "twenty-six million, nine hundred ninety-three thousand, four hundred thirty-one".