145812834 has 12 divisors (see below), whose sum is σ = 315927846. Its totient is φ = 48604272.

The previous prime is 145812833. The next prime is 145812839. The reversal of 145812834 is 438218541.

It can be written as a sum of positive squares in only one way, i.e., 140067225 + 5745609 = 11835^2 + 2397^2 .

It is a super-2 number, since 2×145812834² = 42522765118223112, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145812833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4050339 + ... + 4050374.

Almost surely, 2^145812834 is an apocalyptic number.

145812834 is an abundant number, since it is smaller than the sum of its proper divisors (170115012).

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

145812834 is a wasteful number, since it uses less digits than its factorization.

145812834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8100721 (or 8100718 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 145812834 is about 12075.2985056271. The cubic root of 145812834 is about 526.3386355707.

The spelling of 145812834 in words is "one hundred forty-five million, eight hundred twelve thousand, eight hundred thirty-four".