80406280 has 32 divisors (see below), whose sum is σ = 182525400. Its totient is φ = 31876096.

The previous prime is 80406239. The next prime is 80406301. The reversal of 80406280 is 8260408.

80406280 = T₁₁₃₆ + T₁₁₃₇ + ... + T₁₂₄₈.

It can be written as a sum of positive squares in 4 ways, for example, as 63776196 + 16630084 = 7986^2 + 4078^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4375 + ... + 13414.

Almost surely, 2^80406280 is an apocalyptic number.

It is an amenable number.

80406280 is an abundant number, since it is smaller than the sum of its proper divisors (102119120).

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

80406280 is a wasteful number, since it uses less digits than its factorization.

80406280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17913 (or 17909 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 80406280 is about 8966.9548900393. The cubic root of 80406280 is about 431.6151264639.

Adding to 80406280 its reverse (8260408), we get a palindrome (88666688).

The spelling of 80406280 in words is "eighty million, four hundred six thousand, two hundred eighty".