87716420 has 24 divisors (see below), whose sum is σ = 200950848. Its totient is φ = 31896800.

The previous prime is 87716359. The next prime is 87716423. The reversal of 87716420 is 2461778.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (87716423) 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, 199136 + ... + 199575.

It is an arithmetic number, because the mean of its divisors is an integer number (8372952).

Almost surely, 2^87716420 is an apocalyptic number.

It is an amenable number.

87716420 is an abundant number, since it is smaller than the sum of its proper divisors (113234428).

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

87716420 is a wasteful number, since it uses less digits than its factorization.

87716420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398731 (or 398729 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 87716420 is about 9365.7044582882. The cubic root of 87716420 is about 444.3177189162.

The spelling of 87716420 in words is "eighty-seven million, seven hundred sixteen thousand, four hundred twenty".