80021958 has 64 divisors (see below), whose sum is σ = 180195840. Its totient is φ = 23542272.

The previous prime is 80021957. The next prime is 80021959. The reversal of 80021958 is 85912008.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (80021957) and next prime (80021959).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80021957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 304135 + ... + 304397.

It is an arithmetic number, because the mean of its divisors is an integer number (2815560).

Almost surely, 2^80021958 is an apocalyptic number.

80021958 is an abundant number, since it is smaller than the sum of its proper divisors (100173882).

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

80021958 is a wasteful number, since it uses less digits than its factorization.

80021958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 80021958 is about 8945.4993152982. The cubic root of 80021958 is about 430.9263569642.

The spelling of 80021958 in words is "eighty million, twenty-one thousand, nine hundred fifty-eight".