26431434 has 40 divisors (see below), whose sum is σ = 59559588. Its totient is φ = 8760960.

The previous prime is 26431423. The next prime is 26431453. The reversal of 26431434 is 43413462.

26431434 is a `hidden beast` number, since 2 + 643 + 14 + 3 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20657025 + 5774409 = 4545^2 + 2403^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 26431398 and 26431407.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 38704 + ... + 39380.

Almost surely, 2^26431434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26431434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29779794).

26431434 is an abundant number, since it is smaller than the sum of its proper divisors (33128154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26431434 is a wasteful number, since it uses less digits than its factorization.

26431434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932 (or 923 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 26431434 is about 5141.1510384349. The cubic root of 26431434 is about 297.8792432972.

Adding to 26431434 its reverse (43413462), we get a palindrome (69844896).

The spelling of 26431434 in words is "twenty-six million, four hundred thirty-one thousand, four hundred thirty-four".