87207120 has 480 divisors, whose sum is σ = 396474624. Its totient is φ = 16727040.

The previous prime is 87207097. The next prime is 87207149. The reversal of 87207120 is 2170278.

It is a Saint-Exupery number, since it is equal to the product of the sides of a Pythagorean triangle: 715 × 693 × 176.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6708234 + ... + 6708246.

Almost surely, 2^87207120 is an apocalyptic number.

87207120 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87207120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198237312).

87207120 is an abundant number, since it is smaller than the sum of its proper divisors (309267504).

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

87207120 is a wasteful number, since it uses less digits than its factorization.

87207120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 87207120 is about 9338.4752502751. The cubic root of 87207120 is about 443.4561151371.

Adding to 87207120 its reverse (2170278), we get a palindrome (89377398).

The spelling of 87207120 in words is "eighty-seven million, two hundred seven thousand, one hundred twenty".