280142226 has 160 divisors (see below), whose sum is σ = 798809088. Its totient is φ = 71383680.

The previous prime is 280142197. The next prime is 280142263. The reversal of 280142226 is 622241082.

It is a happy number.

It is a super-3 number, since 3×280142226³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 280142226.

It is an unprimeable number.

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 79 ways as a sum of consecutive naturals, for example, 456696 + ... + 457308.

Almost surely, 2^280142226 is an apocalyptic number.

280142226 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 280142226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399404544).

280142226 is an abundant number, since it is smaller than the sum of its proper divisors (518666862).

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

280142226 is a wasteful number, since it uses less digits than its factorization.

280142226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 280142226 is about 16737.4498057500. The cubic root of 280142226 is about 654.3240124968.

The spelling of 280142226 in words is "two hundred eighty million, one hundred forty-two thousand, two hundred twenty-six".