26190531 has 24 divisors (see below), whose sum is σ = 40235520. Its totient is φ = 16369776.

The previous prime is 26190529. The next prime is 26190539. The reversal of 26190531 is 13509162.

It is not a de Polignac number, because 26190531 - 2¹ = 26190529 is a prime.

It is a super-2 number, since 2×26190531² = 1371887828123922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26190495 and 26190504.

It is not an unprimeable number, because it can be changed into a prime (26190539) 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 23 ways as a sum of consecutive naturals, for example, 16870 + ... + 18356.

It is an arithmetic number, because the mean of its divisors is an integer number (1676480).

Almost surely, 2^26190531 is an apocalyptic number.

26190531 is a deficient number, since it is larger than the sum of its proper divisors (14044989).

26190531 is a wasteful number, since it uses less digits than its factorization.

26190531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615 (or 1612 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 26190531 is about 5117.6685121254. The cubic root of 26190531 is about 296.9714967715.

Adding to 26190531 its reverse (13509162), we get a palindrome (39699693).

The spelling of 26190531 in words is "twenty-six million, one hundred ninety thousand, five hundred thirty-one".