145812688 has 40 divisors (see below), whose sum is σ = 339869120. Its totient is φ = 59201280.

The previous prime is 145812649. The next prime is 145812701. The reversal of 145812688 is 886218541.

It is a super-2 number, since 2×145812688² = 42522679963570688, which contains 22 as substring.

It is a congruent number.

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, 32133 + ... + 36388.

It is an arithmetic number, because the mean of its divisors is an integer number (8496728).

Almost surely, 2^145812688 is an apocalyptic number.

It is an amenable number.

145812688 is an abundant number, since it is smaller than the sum of its proper divisors (194056432).

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

145812688 is a wasteful number, since it uses less digits than its factorization.

145812688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68555 (or 68549 counting only the distinct ones).

The product of its digits is 122880, while the sum is 43.

The square root of 145812688 is about 12075.2924602264. The cubic root of 145812688 is about 526.3384598993.

The spelling of 145812688 in words is "one hundred forty-five million, eight hundred twelve thousand, six hundred eighty-eight".