2891225232 has 160 divisors (see below), whose sum is σ = 9569506560. Its totient is φ = 818657280.

The previous prime is 2891225219. The next prime is 2891225243. The reversal of 2891225232 is 2325221982.

2891225232 is a `hidden beast` number, since 2 + 8 + 9 + 122 + 523 + 2 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 337482 + ... + 345942.

It is an arithmetic number, because the mean of its divisors is an integer number (59809416).

Almost surely, 2^2891225232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2891225232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4784753280).

2891225232 is an abundant number, since it is smaller than the sum of its proper divisors (6678281328).

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

2891225232 is a wasteful number, since it uses less digits than its factorization.

2891225232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8598 (or 8586 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 2891225232 is about 53770.1146734875. The cubic root of 2891225232 is about 1424.6033954448.

The spelling of 2891225232 in words is "two billion, eight hundred ninety-one million, two hundred twenty-five thousand, two hundred thirty-two".