2151407028 has 72 divisors (see below), whose sum is σ = 5274345888. Its totient is φ = 682476608.

The previous prime is 2151407009. The next prime is 2151407029. The reversal of 2151407028 is 8207041512.

2151407028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2151406986 and 2151407004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151407029) 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, 1440250 + ... + 1441742.

It is an arithmetic number, because the mean of its divisors is an integer number (73254804).

Almost surely, 2^2151407028 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 2151407028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2637172944).

2151407028 is an abundant number, since it is smaller than the sum of its proper divisors (3122938860).

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

2151407028 is a wasteful number, since it uses less digits than its factorization.

2151407028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773 (or 1748 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 2151407028 is about 46383.2623690917. The cubic root of 2151407028 is about 1290.9443694813.

The spelling of 2151407028 in words is "two billion, one hundred fifty-one million, four hundred seven thousand, twenty-eight".