690789428 has 12 divisors (see below), whose sum is σ = 1381578912. Its totient is φ = 296052600.

The previous prime is 690789419. The next prime is 690789469. The reversal of 690789428 is 824987096.

690789428 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 690789428.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12335498 + ... + 12335553.

It is an arithmetic number, because the mean of its divisors is an integer number (115131576).

Almost surely, 2^690789428 is an apocalyptic number.

It is an amenable number.

690789428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

690789428 is a wasteful number, since it uses less digits than its factorization.

690789428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24671062 (or 24671060 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 690789428 is about 26282.8732828053. The cubic root of 690789428 is about 883.9924601638.

The spelling of 690789428 in words is "six hundred ninety million, seven hundred eighty-nine thousand, four hundred twenty-eight".