26040402 has 12 divisors (see below), whose sum is σ = 56420910. Its totient is φ = 8680128.

The previous prime is 26040373. The next prime is 26040407. The reversal of 26040402 is 20404062.

26040402 is a `hidden beast` number, since 260 + 4 + 0 + 402 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17969121 + 8071281 = 4239^2 + 2841^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1446689 = 26040402 / (2 + 6 + 0 + 4 + 0 + 4 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (26040407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 723327 + ... + 723362.

Almost surely, 2^26040402 is an apocalyptic number.

26040402 is an abundant number, since it is smaller than the sum of its proper divisors (30380508).

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

26040402 is a wasteful number, since it uses less digits than its factorization.

26040402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446697 (or 1446694 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 26040402 is about 5102.9797177727. The cubic root of 26040402 is about 296.4029771265.

Adding to 26040402 its reverse (20404062), we get a palindrome (46444464).

The spelling of 26040402 in words is "twenty-six million, forty thousand, four hundred two".