1226525328 has 200 divisors, whose sum is σ = 4079167488. Its totient is φ = 348530688.

The previous prime is 1226525303. The next prime is 1226525351. The reversal of 1226525328 is 8235256221.

It is a happy number.

1226525328 is a `hidden beast` number, since 122 + 6 + 525 + 3 + 2 + 8 = 666.

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 = 1226525292 and 1226525301.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3202225 + ... + 3202607.

Almost surely, 2^1226525328 is an apocalyptic number.

1226525328 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 1226525328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2039583744).

1226525328 is an abundant number, since it is smaller than the sum of its proper divisors (2852642160).

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

1226525328 is a wasteful number, since it uses less digits than its factorization.

1226525328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763 (or 748 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 1226525328 is about 35021.7836210551. The cubic root of 1226525328 is about 1070.4314002733.

The spelling of 1226525328 in words is "one billion, two hundred twenty-six million, five hundred twenty-five thousand, three hundred twenty-eight".