87370220 has 48 divisors (see below), whose sum is σ = 210228480. Its totient is φ = 29878464.

The previous prime is 87370207. The next prime is 87370229. The reversal of 87370220 is 2207378.

It is not an unprimeable number, because it can be changed into a prime (87370229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91787 + ... + 92733.

It is an arithmetic number, because the mean of its divisors is an integer number (4379760).

Almost surely, 2^87370220 is an apocalyptic number.

It is an amenable number.

87370220 is an abundant number, since it is smaller than the sum of its proper divisors (122858260).

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

87370220 is a wasteful number, since it uses less digits than its factorization.

87370220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622 (or 1620 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 87370220 is about 9347.2038599787. The cubic root of 87370220 is about 443.7324023968.

Adding to 87370220 its reverse (2207378), we get a palindrome (89577598).

The spelling of 87370220 in words is "eighty-seven million, three hundred seventy thousand, two hundred twenty".