145660240 has 40 divisors (see below), whose sum is σ = 369449568. Its totient is φ = 52967040.

The previous prime is 145660189. The next prime is 145660247. The reversal of 145660240 is 42066541.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 145660199 and 145660208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145660247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81882 + ... + 83641.

Almost surely, 2^145660240 is an apocalyptic number.

145660240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145660240 is an abundant number, since it is smaller than the sum of its proper divisors (223789328).

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

145660240 is a wasteful number, since it uses less digits than its factorization.

145660240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165547 (or 165541 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 145660240 is about 12068.9784157567. The cubic root of 145660240 is about 526.1549659788.

The spelling of 145660240 in words is "one hundred forty-five million, six hundred sixty thousand, two hundred forty".