87548220 has 36 divisors (see below), whose sum is σ = 265563480. Its totient is φ = 23346144.

The previous prime is 87548171. The next prime is 87548221. The reversal of 87548220 is 2284578.

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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (87548221) 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, 243010 + ... + 243369.

Almost surely, 2^87548220 is an apocalyptic number.

It is an amenable number.

87548220 is an abundant number, since it is smaller than the sum of its proper divisors (178015260).

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

87548220 is a wasteful number, since it uses less digits than its factorization.

87548220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486394 (or 486389 counting only the distinct ones).

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

The square root of 87548220 is about 9356.7205793483. The cubic root of 87548220 is about 444.0335377637.

The spelling of 87548220 in words is "eighty-seven million, five hundred forty-eight thousand, two hundred twenty".