145715744 has 24 divisors (see below), whose sum is σ = 287225820. Its totient is φ = 72769536.

The previous prime is 145715729. The next prime is 145715761. The reversal of 145715744 is 447517541.

It can be written as a sum of positive squares in 2 ways, for example, as 114490000 + 31225744 = 10700^2 + 5588^2 .

It is a junction number, because it is equal to n+sod(n) for n = 145715698 and 145715707.

It is a congruent number.

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, 30032 + ... + 34544.

Almost surely, 2^145715744 is an apocalyptic number.

It is an amenable number.

145715744 is a deficient number, since it is larger than the sum of its proper divisors (141510076).

145715744 is a wasteful number, since it uses less digits than its factorization.

145715744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5532 (or 5524 counting only the distinct ones).

The product of its digits is 78400, while the sum is 38.

The square root of 145715744 is about 12071.2776457175. The cubic root of 145715744 is about 526.2217881412.

The spelling of 145715744 in words is "one hundred forty-five million, seven hundred fifteen thousand, seven hundred forty-four".