87905930 has 16 divisors (see below), whose sum is σ = 180835200. Its totient is φ = 30139152.

The previous prime is 87905921. The next prime is 87905947. The reversal of 87905930 is 3950978.

It is a Curzon 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, 627830 + ... + 627969.

It is an arithmetic number, because the mean of its divisors is an integer number (11302200).

Almost surely, 2^87905930 is an apocalyptic number.

87905930 is an abundant number, since it is smaller than the sum of its proper divisors (92929270).

87905930 is a wasteful number, since it uses less digits than its factorization.

87905930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255813.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 87905930 is about 9375.8162311342. The cubic root of 87905930 is about 444.6374693273.

The spelling of 87905930 in words is "eighty-seven million, nine hundred five thousand, nine hundred thirty".