1229357448 has 288 divisors, whose sum is σ = 3982698720. Its totient is φ = 339456000.

The previous prime is 1229357411. The next prime is 1229357471. The reversal of 1229357448 is 8447539221.

1229357448 is a `hidden beast` number, since 12 + 29 + 3 + 574 + 48 = 666.

It is a super-2 number, since 2×1229357448² = 3022639469906145408, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9384343 + ... + 9384473.

It is an arithmetic number, because the mean of its divisors is an integer number (13828815).

Almost surely, 2^1229357448 is an apocalyptic number.

1229357448 is a gapful number since it is divisible by the number (18) 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 1229357448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1991349360).

1229357448 is an abundant number, since it is smaller than the sum of its proper divisors (2753341272).

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

1229357448 is a wasteful number, since it uses less digits than its factorization.

1229357448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 205 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 1229357448 is about 35062.1939986647. The cubic root of 1229357448 is about 1071.2546635529.

The spelling of 1229357448 in words is "one billion, two hundred twenty-nine million, three hundred fifty-seven thousand, four hundred forty-eight".