87741820 has 24 divisors (see below), whose sum is σ = 190612800. Its totient is φ = 33886272.

The previous prime is 87741817. The next prime is 87741827. The reversal of 87741820 is 2814778.

It is a self number, because there is not a number n which added to its sum of digits gives 87741820.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87741827) 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, 75060 + ... + 76219.

It is an arithmetic number, because the mean of its divisors is an integer number (7942200).

Almost surely, 2^87741820 is an apocalyptic number.

It is an amenable number.

87741820 is an abundant number, since it is smaller than the sum of its proper divisors (102870980).

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

87741820 is a wasteful number, since it uses less digits than its factorization.

87741820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151317 (or 151315 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 87741820 is about 9367.0603713225. The cubic root of 87741820 is about 444.3606017307.

The spelling of 87741820 in words is "eighty-seven million, seven hundred forty-one thousand, eight hundred twenty".