81060490 has 16 divisors (see below), whose sum is σ = 166753152. Its totient is φ = 27792144.

The previous prime is 81060457. The next prime is 81060509. The reversal of 81060490 is 9406018.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 578934 + ... + 579073.

It is an arithmetic number, because the mean of its divisors is an integer number (10422072).

Almost surely, 2^81060490 is an apocalyptic number.

81060490 is an abundant number, since it is smaller than the sum of its proper divisors (85692662).

81060490 is a wasteful number, since it uses less digits than its factorization.

81060490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158021.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 81060490 is about 9003.3599283823. The cubic root of 81060490 is about 432.7825500656.

The spelling of 81060490 in words is "eighty-one million, sixty thousand, four hundred ninety".