80823215 has 16 divisors (see below), whose sum is σ = 107602560. Its totient is φ = 57781920.

The previous prime is 80823209. The next prime is 80823217. The reversal of 80823215 is 51232808.

It is not a de Polignac number, because 80823215 - 2¹⁶ = 80757679 is a prime.

It is a super-3 number, since 3×80823215³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80823217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9209 + ... + 15698.

It is an arithmetic number, because the mean of its divisors is an integer number (6725160).

Almost surely, 2^80823215 is an apocalyptic number.

80823215 is a deficient number, since it is larger than the sum of its proper divisors (26779345).

80823215 is a wasteful number, since it uses less digits than its factorization.

80823215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24982.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 80823215 is about 8990.1732463841. The cubic root of 80823215 is about 432.3598663917.

The spelling of 80823215 in words is "eighty million, eight hundred twenty-three thousand, two hundred fifteen".