428543972 has 12 divisors (see below), whose sum is σ = 768243756. Its totient is φ = 209045760.

The previous prime is 428543923. The next prime is 428544019. The reversal of 428543972 is 279345824.

It can be written as a sum of positive squares in 2 ways, for example, as 157151296 + 271392676 = 12536^2 + 16474^2 .

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, 1306373 + ... + 1306700.

It is an arithmetic number, because the mean of its divisors is an integer number (64020313).

Almost surely, 2^428543972 is an apocalyptic number.

It is an amenable number.

428543972 is a deficient number, since it is larger than the sum of its proper divisors (339699784).

428543972 is a wasteful number, since it uses less digits than its factorization.

428543972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2613118 (or 2613116 counting only the distinct ones).

The product of its digits is 483840, while the sum is 44.

The square root of 428543972 is about 20701.3036304480. The cubic root of 428543972 is about 753.9313401539.

The spelling of 428543972 in words is "four hundred twenty-eight million, five hundred forty-three thousand, nine hundred seventy-two".