8721150 has 48 divisors (see below), whose sum is σ = 22056624. Its totient is φ = 2279680.

The previous prime is 8721121. The next prime is 8721157. The reversal of 8721150 is 511278.

8721150 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8721150.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8721157) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7402 + ... + 8498.

It is an arithmetic number, because the mean of its divisors is an integer number (459513).

Almost surely, 2^8721150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8721150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11028312).

8721150 is an abundant number, since it is smaller than the sum of its proper divisors (13335474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8721150 is a wasteful number, since it uses less digits than its factorization.

8721150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165 (or 1160 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 8721150 is about 2953.1593251973. The cubic root of 8721150 is about 205.8375411875.

The spelling of 8721150 in words is "eight million, seven hundred twenty-one thousand, one hundred fifty".