87378620 has 24 divisors (see below), whose sum is σ = 209709024. Its totient is φ = 29958336.

The previous prime is 87378619. The next prime is 87378689. The reversal of 87378620 is 2687378.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311927 + ... + 312206.

It is an arithmetic number, because the mean of its divisors is an integer number (8737876).

Almost surely, 2^87378620 is an apocalyptic number.

It is an amenable number.

87378620 is an abundant number, since it is smaller than the sum of its proper divisors (122330404).

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

87378620 is a wasteful number, since it uses less digits than its factorization.

87378620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624149 (or 624147 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 87378620 is about 9347.6531814140. The cubic root of 87378620 is about 443.7466224698.

The spelling of 87378620 in words is "eighty-seven million, three hundred seventy-eight thousand, six hundred twenty".