428349012 has 48 divisors (see below), whose sum is σ = 1230133632. Its totient is φ = 112970880.

The previous prime is 428349011. The next prime is 428349013. The reversal of 428349012 is 210943824.

It is an interprime number because it is at equal distance from previous prime (428349011) and next prime (428349013).

It is a super-2 number, since 2×428349012² = 366965752162752288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428349011) 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 in 15 ways as a sum of consecutive naturals, for example, 195039 + ... + 197222.

It is an arithmetic number, because the mean of its divisors is an integer number (25627784).

Almost surely, 2^428349012 is an apocalyptic number.

428349012 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

428349012 is an abundant number, since it is smaller than the sum of its proper divisors (801784620).

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

428349012 is a wasteful number, since it uses less digits than its factorization.

428349012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392288 (or 392286 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 428349012 is about 20696.5942125752. The cubic root of 428349012 is about 753.8169926897.

The spelling of 428349012 in words is "four hundred twenty-eight million, three hundred forty-nine thousand, twelve".