83386021428 has 192 divisors, whose sum is σ = 232927591680. Its totient is φ = 25702465536.

The previous prime is 83386021399. The next prime is 83386021447. The reversal of 83386021428 is 82412068338.

83386021428 is a `hidden beast` number, since 8 + 3 + 3 + 8 + 602 + 14 + 28 = 666.

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, 68517076 + ... + 68518292.

It is an arithmetic number, because the mean of its divisors is an integer number (1213164540).

Almost surely, 2^83386021428 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 83386021428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116463795840).

83386021428 is an abundant number, since it is smaller than the sum of its proper divisors (149541570252).

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

83386021428 is a wasteful number, since it uses less digits than its factorization.

83386021428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1871 (or 1863 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The spelling of 83386021428 in words is "eighty-three billion, three hundred eighty-six million, twenty-one thousand, four hundred twenty-eight".