2009632500 has 90 divisors (see below), whose sum is σ = 6347919578. Its totient is φ = 535896000.

The previous prime is 2009632481. The next prime is 2009632501. The reversal of 2009632500 is 52369002.

2009632500 is a `hidden beast` number, since 20 + 0 + 9 + 632 + 5 + 0 + 0 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 871784676 + 1137847824 = 29526^2 + 33732^2 .

It is a tau number, because it is divible by the number of its divisors (90).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2009632501) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 22159 + ... + 67158.

Almost surely, 2^2009632500 is an apocalyptic number.

2009632500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2009632500 is an abundant number, since it is smaller than the sum of its proper divisors (4338287078).

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

2009632500 is a wasteful number, since it uses less digits than its factorization.

2009632500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89347 (or 89327 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 2009632500 is about 44828.9248142313. The cubic root of 2009632500 is about 1261.9405095345.

The spelling of 2009632500 in words is "two billion, nine million, six hundred thirty-two thousand, five hundred".