1226726403 has 32 divisors (see below), whose sum is σ = 1918304256. Its totient is φ = 682704288.

The previous prime is 1226726381. The next prime is 1226726411. The reversal of 1226726403 is 3046276221.

It is not a de Polignac number, because 1226726403 - 2⁶ = 1226726339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1226726903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 344076 + ... + 347622.

It is an arithmetic number, because the mean of its divisors is an integer number (59947008).

Almost surely, 2^1226726403 is an apocalyptic number.

1226726403 is a deficient number, since it is larger than the sum of its proper divisors (691577853).

1226726403 is a wasteful number, since it uses less digits than its factorization.

1226726403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3983.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 1226726403 is about 35024.6542167085. The cubic root of 1226726403 is about 1070.4898921305.

The spelling of 1226726403 in words is "one billion, two hundred twenty-six million, seven hundred twenty-six thousand, four hundred three".