2087540028 has 36 divisors (see below), whose sum is σ = 6030671920. Its totient is φ = 596439936.

The previous prime is 2087539999. The next prime is 2087540029. The reversal of 2087540028 is 8200457802.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2087539974 and 2087540001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2087540029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4141693 + ... + 4142196.

Almost surely, 2^2087540028 is an apocalyptic number.

2087540028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2087540028 is an abundant number, since it is smaller than the sum of its proper divisors (3943131892).

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

2087540028 is a wasteful number, since it uses less digits than its factorization.

2087540028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8283906 (or 8283901 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 2087540028 is about 45689.6052510853. The cubic root of 2087540028 is about 1278.0414439895.

The spelling of 2087540028 in words is "two billion, eighty-seven million, five hundred forty thousand, twenty-eight".