126539028 has 144 divisors (see below), whose sum is σ = 402554880. Its totient is φ = 32558400.

The previous prime is 126539027. The next prime is 126539029. The reversal of 126539028 is 820935621.

126539028 is a `hidden beast` number, since 1 + 265 + 390 + 2 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (126539027) and next prime (126539029).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 126538983 and 126539001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126539027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 529333 + ... + 529571.

It is an arithmetic number, because the mean of its divisors is an integer number (2795520).

Almost surely, 2^126539028 is an apocalyptic number.

126539028 is a gapful number since it is divisible by the number (18) 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 126539028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201277440).

126539028 is an abundant number, since it is smaller than the sum of its proper divisors (276015852).

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

126539028 is a wasteful number, since it uses less digits than its factorization.

126539028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458 (or 453 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 126539028 is about 11248.9567516281. The cubic root of 126539028 is about 502.0436727559.

The spelling of 126539028 in words is "one hundred twenty-six million, five hundred thirty-nine thousand, twenty-eight".