1226005372 has 12 divisors (see below), whose sum is σ = 2155679176. Its totient is φ = 610097040.

The previous prime is 1226005357. The next prime is 1226005399. The reversal of 1226005372 is 2735006221.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1226005372.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 725463 + ... + 727150.

Almost surely, 2^1226005372 is an apocalyptic number.

It is an amenable number.

1226005372 is a deficient number, since it is larger than the sum of its proper divisors (929673804).

1226005372 is a wasteful number, since it uses less digits than its factorization.

1226005372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452828 (or 1452826 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 1226005372 is about 35014.3595114919. The cubic root of 1226005372 is about 1070.2801176529.

The spelling of 1226005372 in words is "one billion, two hundred twenty-six million, five thousand, three hundred seventy-two".