1228847040 has 336 divisors, whose sum is σ = 4714463520. Its totient is φ = 291962880.

The previous prime is 1228847027. The next prime is 1228847063. The reversal of 1228847040 is 407488221.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1228846986 and 1228847004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 929580 + ... + 930900.

Almost surely, 2^1228847040 is an apocalyptic number.

1228847040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1228847040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2357231760).

1228847040 is an abundant number, since it is smaller than the sum of its proper divisors (3485616480).

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

1228847040 is a wasteful number, since it uses less digits than its factorization.

1228847040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380 (or 1367 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 1228847040 is about 35054.9146340424. The cubic root of 1228847040 is about 1071.1063875465.

The spelling of 1228847040 in words is "one billion, two hundred twenty-eight million, eight hundred forty-seven thousand, forty".