428744736 has 72 divisors (see below), whose sum is σ = 1393426944. Its totient is φ = 122497920.

The previous prime is 428744711. The next prime is 428744737. The reversal of 428744736 is 637447824.

It is a tau number, because it is divible by the number of its divisors (72).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 428744691 and 428744700.

It is not an unprimeable number, because it can be changed into a prime (428744737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104320 + ... + 108351.

It is an arithmetic number, because the mean of its divisors is an integer number (19353152).

Almost surely, 2^428744736 is an apocalyptic number.

It is an amenable number.

428744736 is an abundant number, since it is smaller than the sum of its proper divisors (964682208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428744736 is a wasteful number, since it uses less digits than its factorization.

428744736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212694 (or 212683 counting only the distinct ones).

The product of its digits is 903168, while the sum is 45.

The square root of 428744736 is about 20706.1521292586. The cubic root of 428744736 is about 754.0490555273.

The spelling of 428744736 in words is "four hundred twenty-eight million, seven hundred forty-four thousand, seven hundred thirty-six".