81461026 has 16 divisors (see below), whose sum is σ = 123801696. Its totient is φ = 40196896.

The previous prime is 81461021. The next prime is 81461071. The reversal of 81461026 is 62016418.

It is a junction number, because it is equal to n+sod(n) for n = 81460985 and 81461003.

It is not an unprimeable number, because it can be changed into a prime (81461021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73710 + ... + 74806.

It is an arithmetic number, because the mean of its divisors is an integer number (7737606).

Almost surely, 2^81461026 is an apocalyptic number.

81461026 is a deficient number, since it is larger than the sum of its proper divisors (42340670).

81461026 is a wasteful number, since it uses less digits than its factorization.

81461026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 81461026 is about 9025.5762142924. The cubic root of 81461026 is about 433.4942007599.

The spelling of 81461026 in words is "eighty-one million, four hundred sixty-one thousand, twenty-six".