690793428 has 24 divisors (see below), whose sum is σ = 1735840288. Its totient is φ = 212551776.

The previous prime is 690793421. The next prime is 690793471. The reversal of 690793428 is 824397096.

690793428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690793421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2213926 + ... + 2214237.

Almost surely, 2^690793428 is an apocalyptic number.

It is an amenable number.

690793428 is an abundant number, since it is smaller than the sum of its proper divisors (1045046860).

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

690793428 is a wasteful number, since it uses less digits than its factorization.

690793428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4428183 (or 4428181 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 690793428 is about 26282.9493778761. The cubic root of 690793428 is about 883.9941664064.

The spelling of 690793428 in words is "six hundred ninety million, seven hundred ninety-three thousand, four hundred twenty-eight".