1228228790 has 16 divisors (see below), whose sum is σ = 2211267168. Its totient is φ = 491190336.

The previous prime is 1228228789. The next prime is 1228228817. The reversal of 1228228790 is 978228221.

It is a congruent number.

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, 56159 + ... + 74901.

It is an arithmetic number, because the mean of its divisors is an integer number (138204198).

Almost surely, 2^1228228790 is an apocalyptic number.

1228228790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1228228790 is a deficient number, since it is larger than the sum of its proper divisors (983038378).

1228228790 is a wasteful number, since it uses less digits than its factorization.

1228228790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25303.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 1228228790 is about 35046.0952175845. The cubic root of 1228228790 is about 1070.9267279171.

The spelling of 1228228790 in words is "one billion, two hundred twenty-eight million, two hundred twenty-eight thousand, seven hundred ninety".