2090835640 has 32 divisors (see below), whose sum is σ = 4748356080. Its totient is φ = 828516352.

The previous prime is 2090835629. The next prime is 2090835647. The reversal of 2090835640 is 465380902.

It is a self number, because there is not a number n which added to its sum of digits gives 2090835640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2090835647) 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, 239977 + ... + 248536.

Almost surely, 2^2090835640 is an apocalyptic number.

2090835640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2090835640 is an abundant number, since it is smaller than the sum of its proper divisors (2657520440).

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

2090835640 is a wasteful number, since it uses less digits than its factorization.

2090835640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488631 (or 488627 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 2090835640 is about 45725.6562555421. The cubic root of 2090835640 is about 1278.7136409516.

The spelling of 2090835640 in words is "two billion, ninety million, eight hundred thirty-five thousand, six hundred forty".