80106890 has 16 divisors (see below), whose sum is σ = 152674632. Its totient is φ = 30157824.

The previous prime is 80106889. The next prime is 80106899. The reversal of 80106890 is 9860108.

It can be written as a sum of positive squares in 4 ways, for example, as 60543961 + 19562929 = 7781^2 + 4423^2 .

It is a super-2 number, since 2×80106890² = 12834227650944200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80106899) 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, 235439 + ... + 235778.

Almost surely, 2^80106890 is an apocalyptic number.

80106890 is a deficient number, since it is larger than the sum of its proper divisors (72567742).

80106890 is a wasteful number, since it uses less digits than its factorization.

80106890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471241.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 80106890 is about 8950.2452480365. The cubic root of 80106890 is about 431.0787588695.

Adding to 80106890 its reverse (9860108), we get a palindrome (89966998).

The spelling of 80106890 in words is "eighty million, one hundred six thousand, eight hundred ninety".