87400305 has 24 divisors (see below), whose sum is σ = 152051328. Its totient is φ = 46442016.

The previous prime is 87400283. The next prime is 87400319. The reversal of 87400305 is 50300478.

It is not a de Polignac number, because 87400305 - 2⁷ = 87400177 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9304 + ... + 16166.

It is an arithmetic number, because the mean of its divisors is an integer number (6335472).

Almost surely, 2^87400305 is an apocalyptic number.

It is an amenable number.

87400305 is a deficient number, since it is larger than the sum of its proper divisors (64651023).

87400305 is a wasteful number, since it uses less digits than its factorization.

87400305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7157 (or 7154 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 87400305 is about 9348.8130262617. The cubic root of 87400305 is about 443.7833280529.

The spelling of 87400305 in words is "eighty-seven million, four hundred thousand, three hundred five".