1229502240 has 336 divisors, whose sum is σ = 4442231808. Its totient is φ = 321366528.

The previous prime is 1229502227. The next prime is 1229502277. The reversal of 1229502240 is 422059221.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 9681057 + ... + 9681183.

It is an arithmetic number, because the mean of its divisors is an integer number (13220928).

Almost surely, 2^1229502240 is an apocalyptic number.

1229502240 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 1229502240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2221115904).

1229502240 is an abundant number, since it is smaller than the sum of its proper divisors (3212729568).

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

1229502240 is an equidigital number, since it uses as much as digits as its factorization.

1229502240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1229502240 is about 35064.2587259449. The cubic root of 1229502240 is about 1071.2967188603.

The spelling of 1229502240 in words is "one billion, two hundred twenty-nine million, five hundred two thousand, two hundred forty".