1228298490 has 24 divisors (see below), whose sum is σ = 3193576308. Its totient is φ = 327546240.

The previous prime is 1228298473. The next prime is 1228298503. The reversal of 1228298490 is 948928221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1200830409 + 27468081 = 34653^2 + 5241^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6823791 + ... + 6823970.

Almost surely, 2^1228298490 is an apocalyptic number.

1228298490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1228298490 is an abundant number, since it is smaller than the sum of its proper divisors (1965277818).

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

1228298490 is a wasteful number, since it uses less digits than its factorization.

1228298490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13647774 (or 13647771 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 1228298490 is about 35047.0896081258. The cubic root of 1228298490 is about 1070.9469853213.

The spelling of 1228298490 in words is "one billion, two hundred twenty-eight million, two hundred ninety-eight thousand, four hundred ninety".