145684040 has 16 divisors (see below), whose sum is σ = 327789180. Its totient is φ = 58273600.

The previous prime is 145684037. The next prime is 145684057. The reversal of 145684040 is 40486541.

145684040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 139759684 + 5924356 = 11822^2 + 2434^2 .

It is a junction number, because it is equal to n+sod(n) for n = 145683988 and 145684006.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1821011 + ... + 1821090.

Almost surely, 2^145684040 is an apocalyptic number.

145684040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145684040 is an abundant number, since it is smaller than the sum of its proper divisors (182105140).

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

145684040 is a wasteful number, since it uses less digits than its factorization.

145684040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3642112 (or 3642108 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 145684040 is about 12069.9643744296. The cubic root of 145684040 is about 526.1836212619.

The spelling of 145684040 in words is "one hundred forty-five million, six hundred eighty-four thousand, forty".