87145146 has 48 divisors (see below), whose sum is σ = 213621408. Its totient is φ = 26406000.

The previous prime is 87145141. The next prime is 87145159. The reversal of 87145146 is 64154178.

It is a happy number.

It is a super-2 number, since 2×87145146² = 15188552942722632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87145146.

It is not an unprimeable number, because it can be changed into a prime (87145141) 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, 2805 + ... + 13496.

It is an arithmetic number, because the mean of its divisors is an integer number (4450446).

Almost surely, 2^87145146 is an apocalyptic number.

87145146 is an abundant number, since it is smaller than the sum of its proper divisors (126476262).

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

87145146 is a wasteful number, since it uses less digits than its factorization.

87145146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16329 (or 16317 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 87145146 is about 9335.1564528935. The cubic root of 87145146 is about 443.3510424393.

The spelling of 87145146 in words is "eighty-seven million, one hundred forty-five thousand, one hundred forty-six".