26146981 has 16 divisors (see below), whose sum is σ = 31177728. Its totient is φ = 21456000.

The previous prime is 26146963. The next prime is 26146987. The reversal of 26146981 is 18964162.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 26146981 - 2¹¹ = 26144933 is a prime.

It is a super-2 number, since 2×26146981² = 1367329230828722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26146981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26146987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21321 + ... + 22513.

It is an arithmetic number, because the mean of its divisors is an integer number (1948608).

Almost surely, 2^26146981 is an apocalyptic number.

It is an amenable number.

26146981 is a deficient number, since it is larger than the sum of its proper divisors (5030747).

26146981 is a wasteful number, since it uses less digits than its factorization.

26146981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332.

The product of its digits is 20736, while the sum is 37.

The square root of 26146981 is about 5113.4118746684. The cubic root of 26146981 is about 296.8068025954.

The spelling of 26146981 in words is "twenty-six million, one hundred forty-six thousand, nine hundred eighty-one".