80823642 has 16 divisors (see below), whose sum is σ = 162059232. Its totient is φ = 26872560.

The previous prime is 80823637. The next prime is 80823643. The reversal of 80823642 is 24632808.

It is a super-2 number, since 2×80823642² = 13064922212288328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80823643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14584 + ... + 19347.

It is an arithmetic number, because the mean of its divisors is an integer number (10128702).

Almost surely, 2^80823642 is an apocalyptic number.

80823642 is an abundant number, since it is smaller than the sum of its proper divisors (81235590).

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

80823642 is a wasteful number, since it uses less digits than its factorization.

80823642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34333.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 80823642 is about 8990.1969945046. The cubic root of 80823642 is about 432.3606277956.

The spelling of 80823642 in words is "eighty million, eight hundred twenty-three thousand, six hundred forty-two".