403856428 has 6 divisors (see below), whose sum is σ = 706748756. Its totient is φ = 201928212.

The previous prime is 403856393. The next prime is 403856429. The reversal of 403856428 is 824658304.

It is not an unprimeable number, because it can be changed into a prime (403856429) 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 as a sum of consecutive naturals, namely, 50482050 + ... + 50482057.

Almost surely, 2^403856428 is an apocalyptic number.

It is an amenable number.

403856428 is a deficient number, since it is larger than the sum of its proper divisors (302892328).

403856428 is a wasteful number, since it uses less digits than its factorization.

403856428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100964111 (or 100964109 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

The square root of 403856428 is about 20096.1794378932. The cubic root of 403856428 is about 739.1665976728.

The spelling of 403856428 in words is "four hundred three million, eight hundred fifty-six thousand, four hundred twenty-eight".