428294072 has 16 divisors (see below), whose sum is σ = 803635560. Its totient is φ = 213991264.

The previous prime is 428294071. The next prime is 428294089. The reversal of 428294072 is 270492824.

It is a super-2 number, since 2×428294072² = 366871624220682368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428294071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7343 + ... + 30174.

Almost surely, 2^428294072 is an apocalyptic number.

It is an amenable number.

428294072 is a deficient number, since it is larger than the sum of its proper divisors (375341488).

428294072 is a wasteful number, since it uses less digits than its factorization.

428294072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38950 (or 38946 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 428294072 is about 20695.2668984964. The cubic root of 428294072 is about 753.7847631486.

The spelling of 428294072 in words is "four hundred twenty-eight million, two hundred ninety-four thousand, seventy-two".