145640156 has 24 divisors (see below), whose sum is σ = 271012896. Its totient is φ = 68244480.

The previous prime is 145640137. The next prime is 145640189. The reversal of 145640156 is 651046541.

145640156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145640156² = 42422110079408672, 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, 11945 + ... + 20831.

It is an arithmetic number, because the mean of its divisors is an integer number (11292204).

Almost surely, 2^145640156 is an apocalyptic number.

It is an amenable number.

145640156 is a deficient number, since it is larger than the sum of its proper divisors (125372740).

145640156 is a wasteful number, since it uses less digits than its factorization.

145640156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9149 (or 9147 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 145640156 is about 12068.1463365340. The cubic root of 145640156 is about 526.1307823442.

Adding to 145640156 its reverse (651046541), we get a palindrome (796686697).

The spelling of 145640156 in words is "one hundred forty-five million, six hundred forty thousand, one hundred fifty-six".