83628870 has 32 divisors (see below), whose sum is σ = 216149472. Its totient is φ = 20585472.

The previous prime is 83628869. The next prime is 83628871. The reversal of 83628870 is 7882638.

It is an interprime number because it is at equal distance from previous prime (83628869) and next prime (83628871).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83628871) 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 15 ways as a sum of consecutive naturals, for example, 106827 + ... + 107606.

It is an arithmetic number, because the mean of its divisors is an integer number (6754671).

Almost surely, 2^83628870 is an apocalyptic number.

83628870 is an abundant number, since it is smaller than the sum of its proper divisors (132520602).

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

83628870 is a wasteful number, since it uses less digits than its factorization.

83628870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214456.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 83628870 is about 9144.8821752935. The cubic root of 83628870 is about 437.3059732836.

The spelling of 83628870 in words is "eighty-three million, six hundred twenty-eight thousand, eight hundred seventy".