43028131500 has 576 divisors, whose sum is σ = 150111561600. Its totient is φ = 10770537600.

The previous prime is 43028131441. The next prime is 43028131511. The reversal of 43028131500 is 513182034.

It is a happy number.

43028131500 is a `hidden beast` number, since 4 + 3 + 0 + 28 + 131 + 500 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 394753446 + ... + 394753554.

It is an arithmetic number, because the mean of its divisors is an integer number (260610350).

Almost surely, 2^43028131500 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 43028131500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75055780800).

43028131500 is an abundant number, since it is smaller than the sum of its proper divisors (107083430100).

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

43028131500 is a wasteful number, since it uses less digits than its factorization.

43028131500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The spelling of 43028131500 in words is "forty-three billion, twenty-eight million, one hundred thirty-one thousand, five hundred".