1228980040 has 32 divisors (see below), whose sum is σ = 2910744000. Its totient is φ = 465718464.

The previous prime is 1228980029. The next prime is 1228980101. The reversal of 1228980040 is 400898221.

It is a junction number, because it is equal to n+sod(n) for n = 1228979978 and 1228980005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 807780 + ... + 809299.

It is an arithmetic number, because the mean of its divisors is an integer number (90960750).

Almost surely, 2^1228980040 is an apocalyptic number.

1228980040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1228980040 is an abundant number, since it is smaller than the sum of its proper divisors (1681763960).

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

1228980040 is a wasteful number, since it uses less digits than its factorization.

1228980040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617109 (or 1617105 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 1228980040 is about 35056.8116063056. The cubic root of 1228980040 is about 1071.1450286482.

It can be divided in two parts, 12289 and 80040, that added together give a palindrome (92329).

The spelling of 1228980040 in words is "one billion, two hundred twenty-eight million, nine hundred eighty thousand, forty".