145623272 has 32 divisors (see below), whose sum is σ = 277992000. Its totient is φ = 71500800.

The previous prime is 145623271. The next prime is 145623293. The reversal of 145623272 is 272326541.

It is a super-2 number, since 2×145623272² = 42412274695971968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145623271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254747 + ... + 255317.

It is an arithmetic number, because the mean of its divisors is an integer number (8687250).

Almost surely, 2^145623272 is an apocalyptic number.

It is an amenable number.

145623272 is a deficient number, since it is larger than the sum of its proper divisors (132368728).

145623272 is a wasteful number, since it uses less digits than its factorization.

145623272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097 (or 1093 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 145623272 is about 12067.4467887785. The cubic root of 145623272 is about 526.1104501875.

The spelling of 145623272 in words is "one hundred forty-five million, six hundred twenty-three thousand, two hundred seventy-two".