101947156 has 12 divisors (see below), whose sum is σ = 182759220. Its totient is φ = 49730240.

The previous prime is 101947129. The next prime is 101947163. The reversal of 101947156 is 651749101.

It can be written as a sum of positive squares in 2 ways, for example, as 2944656 + 99002500 = 1716^2 + 9950^2 .

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, 310651 + ... + 310978.

It is an arithmetic number, because the mean of its divisors is an integer number (15229935).

Almost surely, 2^101947156 is an apocalyptic number.

It is an amenable number.

101947156 is a deficient number, since it is larger than the sum of its proper divisors (80812064).

101947156 is a wasteful number, since it uses less digits than its factorization.

101947156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621674 (or 621672 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 101947156 is about 10096.8884315912. Note that the first 3 decimals coincide. The cubic root of 101947156 is about 467.1521711394.

The spelling of 101947156 in words is "one hundred one million, nine hundred forty-seven thousand, one hundred fifty-six".