26961490 has 16 divisors (see below), whose sum is σ = 51385752. Its totient is φ = 10150144.

The previous prime is 26961481. The next prime is 26961491. The reversal of 26961490 is 9416962.

It can be written as a sum of positive squares in 4 ways, for example, as 16248961 + 10712529 = 4031^2 + 3273^2 .

It is not an unprimeable number, because it can be changed into a prime (26961491) 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 7 ways as a sum of consecutive naturals, for example, 79129 + ... + 79468.

Almost surely, 2^26961490 is an apocalyptic number.

26961490 is a deficient number, since it is larger than the sum of its proper divisors (24424262).

26961490 is a wasteful number, since it uses less digits than its factorization.

26961490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158621.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 26961490 is about 5192.4454739554. The cubic root of 26961490 is about 299.8573025059.

It can be divided in two parts, 2696 and 1490, that added together give a triangular number (4186 = T₉₁).

The spelling of 26961490 in words is "twenty-six million, nine hundred sixty-one thousand, four hundred ninety".