26320197 has 16 divisors (see below), whose sum is σ = 36823680. Its totient is φ = 16699200.

The previous prime is 26320163. The next prime is 26320201. The reversal of 26320197 is 79102362.

It is not a de Polignac number, because 26320197 - 2⁷ = 26320069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26320117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4047 + ... + 8307.

It is an arithmetic number, because the mean of its divisors is an integer number (2301480).

Almost surely, 2^26320197 is an apocalyptic number.

It is an amenable number.

26320197 is a deficient number, since it is larger than the sum of its proper divisors (10503483).

26320197 is a wasteful number, since it uses less digits than its factorization.

26320197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4364.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 26320197 is about 5130.3213349653. The cubic root of 26320197 is about 297.4607796142.

The spelling of 26320197 in words is "twenty-six million, three hundred twenty thousand, one hundred ninety-seven".