2151706032 has 300 divisors, whose sum is σ = 7484955456. Its totient is φ = 594397440.

The previous prime is 2151706021. The next prime is 2151706033. The reversal of 2151706032 is 2306071512.

It is a happy number.

2151706032 is a `hidden beast` number, since 2 + 1 + 51 + 7 + 0 + 603 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 2151705987 and 2151706005.

It is not an unprimeable number, because it can be changed into a prime (2151706033) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1968078 + ... + 1969170.

Almost surely, 2^2151706032 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 2151706032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3742477728).

2151706032 is an abundant number, since it is smaller than the sum of its proper divisors (5333249424).

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

2151706032 is a wasteful number, since it uses less digits than its factorization.

2151706032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158 (or 1136 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 2151706032 is about 46386.4854456554. The cubic root of 2151706032 is about 1291.0041721506.

Adding to 2151706032 its reverse (2306071512), we get a palindrome (4457777544).

The spelling of 2151706032 in words is "two billion, one hundred fifty-one million, seven hundred six thousand, thirty-two".