81612462 has 16 divisors (see below), whose sum is σ = 164810880. Its totient is φ = 26939832.

The previous prime is 81612457. The next prime is 81612469. The reversal of 81612462 is 26421618.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81612469) 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, 65412 + ... + 66647.

It is an arithmetic number, because the mean of its divisors is an integer number (10300680).

Almost surely, 2^81612462 is an apocalyptic number.

81612462 is an abundant number, since it is smaller than the sum of its proper divisors (83198418).

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

81612462 is a wasteful number, since it uses less digits than its factorization.

81612462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132167.

The product of its digits is 4608, while the sum is 30.

The square root of 81612462 is about 9033.9615894689. The cubic root of 81612462 is about 433.7626562981.

The spelling of 81612462 in words is "eighty-one million, six hundred twelve thousand, four hundred sixty-two".