1228972401 has 24 divisors (see below), whose sum is σ = 1840756736. Its totient is φ = 789289920.

The previous prime is 1228972351. The next prime is 1228972453. The reversal of 1228972401 is 1042798221.

It is not a de Polignac number, because 1228972401 - 2⁷ = 1228972273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1228972471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52341 + ... + 72093.

Almost surely, 2^1228972401 is an apocalyptic number.

It is an amenable number.

1228972401 is a deficient number, since it is larger than the sum of its proper divisors (611784335).

1228972401 is a wasteful number, since it uses less digits than its factorization.

1228972401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20013 (or 20010 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 1228972401 is about 35056.7026544140. The cubic root of 1228972401 is about 1071.1428093298.

The spelling of 1228972401 in words is "one billion, two hundred twenty-eight million, nine hundred seventy-two thousand, four hundred one".