2129054928 has 320 divisors, whose sum is σ = 7498186752. Its totient is φ = 502640640.

The previous prime is 2129054911. The next prime is 2129054933. The reversal of 2129054928 is 8294509212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 2129054928.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3507201 + ... + 3507807.

Almost surely, 2^2129054928 is an apocalyptic number.

2129054928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2129054928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3749093376).

2129054928 is an abundant number, since it is smaller than the sum of its proper divisors (5369131824).

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

2129054928 is a wasteful number, since it uses less digits than its factorization.

2129054928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722 (or 716 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 2129054928 is about 46141.6831942659. The cubic root of 2129054928 is about 1286.4580295937.

The spelling of 2129054928 in words is "two billion, one hundred twenty-nine million, fifty-four thousand, nine hundred twenty-eight".