81263462 has 48 divisors (see below), whose sum is σ = 152865792. Its totient is φ = 32210640.

The previous prime is 81263461. The next prime is 81263491. The reversal of 81263462 is 26436218.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81263461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69293 + ... + 70455.

It is an arithmetic number, because the mean of its divisors is an integer number (3184704).

Almost surely, 2^81263462 is an apocalyptic number.

81263462 is a deficient number, since it is larger than the sum of its proper divisors (71602330).

81263462 is a wasteful number, since it uses less digits than its factorization.

81263462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233 (or 1226 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 81263462 is about 9014.6248951357. The cubic root of 81263462 is about 433.1434719871.

The spelling of 81263462 in words is "eighty-one million, two hundred sixty-three thousand, four hundred sixty-two".