145715860 has 24 divisors (see below), whose sum is σ = 307701576. Its totient is φ = 57962880.

The previous prime is 145715849. The next prime is 145715881. The reversal of 145715860 is 68517541.

145715860 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 4 ways, for example, as 4866436 + 140849424 = 2206^2 + 11868^2 .

It is a super-2 number, since 2×145715860² = 42466223711079200, 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, 16507 + ... + 23746.

It is an arithmetic number, because the mean of its divisors is an integer number (12820899).

Almost surely, 2^145715860 is an apocalyptic number.

145715860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145715860 is an abundant number, since it is smaller than the sum of its proper divisors (161985716).

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

145715860 is a wasteful number, since it uses less digits than its factorization.

145715860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40443 (or 40441 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 145715860 is about 12071.2824505104. The cubic root of 145715860 is about 526.2219277778.

The spelling of 145715860 in words is "one hundred forty-five million, seven hundred fifteen thousand, eight hundred sixty".