145178440 has 32 divisors (see below), whose sum is σ = 356348160. Its totient is φ = 52792000.

The previous prime is 145178413. The next prime is 145178459. The reversal of 145178440 is 44871541.

It is a happy number.

145178440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 145178396 and 145178405.

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, 164536 + ... + 165415.

It is an arithmetic number, because the mean of its divisors is an integer number (11135880).

Almost surely, 2^145178440 is an apocalyptic number.

145178440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145178440 is an abundant number, since it is smaller than the sum of its proper divisors (211169720).

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

145178440 is a wasteful number, since it uses less digits than its factorization.

145178440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329973 (or 329969 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 145178440 is about 12049.0016183915. The cubic root of 145178440 is about 525.5742047054.

The spelling of 145178440 in words is "one hundred forty-five million, one hundred seventy-eight thousand, four hundred forty".