1401336428 has 12 divisors (see below), whose sum is σ = 2467384920. Its totient is φ = 696369312.

The previous prime is 1401336427. The next prime is 1401336437. The reversal of 1401336428 is 8246331041.

It is a junction number, because it is equal to n+sod(n) for n = 1401336394 and 1401336403.

It is not an unprimeable number, because it can be changed into a prime (1401336427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1073993 + ... + 1075296.

It is an arithmetic number, because the mean of its divisors is an integer number (205615410).

Almost surely, 2^1401336428 is an apocalyptic number.

It is an amenable number.

1401336428 is a deficient number, since it is larger than the sum of its proper divisors (1066048492).

1401336428 is a wasteful number, since it uses less digits than its factorization.

1401336428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2149456 (or 2149454 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 1401336428 is about 37434.4283781655. The cubic root of 1401336428 is about 1119.0447924999.

Adding to 1401336428 its reverse (8246331041), we get a palindrome (9647667469).

The spelling of 1401336428 in words is "one billion, four hundred one million, three hundred thirty-six thousand, four hundred twenty-eight".