145117732 has 12 divisors (see below), whose sum is σ = 254062620. Its totient is φ = 72528416.

The previous prime is 145117697. The next prime is 145117747. The reversal of 145117732 is 237711541.

It can be written as a sum of positive squares in 2 ways, for example, as 87721956 + 57395776 = 9366^2 + 7576^2 .

It is a super-2 number, since 2×145117732² = 42118312281647648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145117694 and 145117703.

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, 5694 + ... + 17962.

It is an arithmetic number, because the mean of its divisors is an integer number (21171885).

Almost surely, 2^145117732 is an apocalyptic number.

It is an amenable number.

145117732 is a deficient number, since it is larger than the sum of its proper divisors (108944888).

145117732 is a wasteful number, since it uses less digits than its factorization.

145117732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15230 (or 15228 counting only the distinct ones).

The product of its digits is 5880, while the sum is 31.

The square root of 145117732 is about 12046.4821421027. The cubic root of 145117732 is about 525.5009362338.

The spelling of 145117732 in words is "one hundred forty-five million, one hundred seventeen thousand, seven hundred thirty-two".