7129285428 has 48 divisors (see below), whose sum is σ = 17037538560. Its totient is φ = 2319212544.

The previous prime is 7129285399. The next prime is 7129285433. The reversal of 7129285428 is 8245829217.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181188 + ... + 216996.

It is an arithmetic number, because the mean of its divisors is an integer number (354948720).

Almost surely, 2^7129285428 is an apocalyptic number.

It is an amenable number.

7129285428 is an abundant number, since it is smaller than the sum of its proper divisors (9908253132).

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

7129285428 is a wasteful number, since it uses less digits than its factorization.

7129285428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36216 (or 36214 counting only the distinct ones).

The product of its digits is 645120, while the sum is 48.

The square root of 7129285428 is about 84435.0959494925. The cubic root of 7129285428 is about 1924.6362771956.

The spelling of 7129285428 in words is "seven billion, one hundred twenty-nine million, two hundred eighty-five thousand, four hundred twenty-eight".