84238740 has 72 divisors (see below), whose sum is σ = 270564840. Its totient is φ = 21141504.

The previous prime is 84238733. The next prime is 84238769. The reversal of 84238740 is 4783248.

It can be written as a sum of positive squares in 4 ways, for example, as 12362256 + 71876484 = 3516^2 + 8478^2 .

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 = 84238695 and 84238704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10705 + ... + 16824.

It is an arithmetic number, because the mean of its divisors is an integer number (3757845).

Almost surely, 2^84238740 is an apocalyptic number.

It is an amenable number.

84238740 is an abundant number, since it is smaller than the sum of its proper divisors (186326100).

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

84238740 is a wasteful number, since it uses less digits than its factorization.

84238740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27561 (or 27556 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 84238740 is about 9178.1664835630. The cubic root of 84238740 is about 438.3664288344.

The spelling of 84238740 in words is "eighty-four million, two hundred thirty-eight thousand, seven hundred forty".