26730531 has 24 divisors (see below), whose sum is σ = 40525056. Its totient is φ = 16946160.

The previous prime is 26730523. The next prime is 26730541. The reversal of 26730531 is 13503762.

It is a happy number.

It is not a de Polignac number, because 26730531 - 2³ = 26730523 is a prime.

It is a super-2 number, since 2×26730531² = 1429042575083922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26730495 and 26730504.

It is not an unprimeable number, because it can be changed into a prime (26730541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54196 + ... + 54686.

It is an arithmetic number, because the mean of its divisors is an integer number (1688544).

Almost surely, 2^26730531 is an apocalyptic number.

26730531 is a deficient number, since it is larger than the sum of its proper divisors (13794525).

26730531 is a wasteful number, since it uses less digits than its factorization.

26730531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 780 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 26730531 is about 5170.1577345377. The cubic root of 26730531 is about 298.9986278987.

It can be divided in two parts, 26730 and 531, that added together give a triangular number (27261 = T₂₃₃).

The spelling of 26730531 in words is "twenty-six million, seven hundred thirty thousand, five hundred thirty-one".