635090420 has 24 divisors (see below), whose sum is σ = 1412142984. Its totient is φ = 239092736.

The previous prime is 635090411. The next prime is 635090431. The reversal of 635090420 is 24090536.

It can be written as a sum of positive squares in 4 ways, for example, as 216560656 + 418529764 = 14716^2 + 20458^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 933617 + ... + 934296.

It is an arithmetic number, because the mean of its divisors is an integer number (58839291).

Almost surely, 2^635090420 is an apocalyptic number.

It is an amenable number.

635090420 is an abundant number, since it is smaller than the sum of its proper divisors (777052564).

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

635090420 is a wasteful number, since it uses less digits than its factorization.

635090420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867939 (or 1867937 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 635090420 is about 25201.0003769692. Note that the first 3 decimals coincide. The cubic root of 635090420 is about 859.5645984227.

The spelling of 635090420 in words is "six hundred thirty-five million, ninety thousand, four hundred twenty".