1226597040 has 160 divisors (see below), whose sum is σ = 4253031360. Its totient is φ = 324919296.

The previous prime is 1226596919. The next prime is 1226597063. The reversal of 1226597040 is 407956221.

1226597040 is a `hidden beast` number, since 1 + 2 + 26 + 597 + 0 + 40 = 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 = 1226596986 and 1226597004.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 337312 + ... + 340928.

It is an arithmetic number, because the mean of its divisors is an integer number (26581446).

Almost surely, 2^1226597040 is an apocalyptic number.

1226597040 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 1226597040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2126515680).

1226597040 is an abundant number, since it is smaller than the sum of its proper divisors (3026434320).

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

1226597040 is a wasteful number, since it uses less digits than its factorization.

1226597040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3796 (or 3784 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 1226597040 is about 35022.8074260188. The cubic root of 1226597040 is about 1070.4522617207.

The spelling of 1226597040 in words is "one billion, two hundred twenty-six million, five hundred ninety-seven thousand, forty".