81500462 has 8 divisors (see below), whose sum is σ = 128685000. Its totient is φ = 38605464.

The previous prime is 81500449. The next prime is 81500483. The reversal of 81500462 is 26400518.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×81500462³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1072337 + ... + 1072412.

It is an arithmetic number, because the mean of its divisors is an integer number (16085625).

Almost surely, 2^81500462 is an apocalyptic number.

81500462 is a deficient number, since it is larger than the sum of its proper divisors (47184538).

81500462 is a wasteful number, since it uses less digits than its factorization.

81500462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2144770.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 81500462 is about 9027.7606304111. The cubic root of 81500462 is about 433.5641422613.

The spelling of 81500462 in words is "eighty-one million, five hundred thousand, four hundred sixty-two".