146851506 has 24 divisors (see below), whose sum is σ = 318721260. Its totient is φ = 48866976.

The previous prime is 146851489. The next prime is 146851511. The reversal of 146851506 is 605158641.

146851506 is a `hidden beast` number, since 146 + 8 + 5 + 1 + 506 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 83887281 + 62964225 = 9159^2 + 7935^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4380 + ... + 17688.

Almost surely, 2^146851506 is an apocalyptic number.

146851506 is an abundant number, since it is smaller than the sum of its proper divisors (171869754).

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

146851506 is a wasteful number, since it uses less digits than its factorization.

146851506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13930 (or 13927 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 146851506 is about 12118.2303163457. The cubic root of 146851506 is about 527.5854399163.

The spelling of 146851506 in words is "one hundred forty-six million, eight hundred fifty-one thousand, five hundred six".