145785456 has 30 divisors (see below), whose sum is σ = 407997200. Its totient is φ = 48595104.

The previous prime is 145785449. The next prime is 145785473. The reversal of 145785456 is 654587541.

It is a super-2 number, since 2×145785456² = 42506798362255872, 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 5 ways as a sum of consecutive naturals, for example, 506056 + ... + 506343.

Almost surely, 2^145785456 is an apocalyptic number.

145785456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

145785456 is an abundant number, since it is smaller than the sum of its proper divisors (262211744).

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

145785456 is a wasteful number, since it uses less digits than its factorization.

145785456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012413 (or 1012404 counting only the distinct ones).

The product of its digits is 672000, while the sum is 45.

The square root of 145785456 is about 12074.1648158372. The cubic root of 145785456 is about 526.3056915087.

The spelling of 145785456 in words is "one hundred forty-five million, seven hundred eighty-five thousand, four hundred fifty-six".