87703890 has 16 divisors (see below), whose sum is σ = 210489408. Its totient is φ = 23387696.

The previous prime is 87703883. The next prime is 87703897. The reversal of 87703890 is 9830778.

It is an interprime number because it is at equal distance from previous prime (87703883) and next prime (87703897).

It is a super-2 number, since 2×87703890² = 15383944642264200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87703897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1461702 + ... + 1461761.

It is an arithmetic number, because the mean of its divisors is an integer number (13155588).

Almost surely, 2^87703890 is an apocalyptic number.

87703890 is an abundant number, since it is smaller than the sum of its proper divisors (122785518).

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

87703890 is a wasteful number, since it uses less digits than its factorization.

87703890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2923473.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 87703890 is about 9365.0355044709. The cubic root of 87703890 is about 444.2965614707.

The spelling of 87703890 in words is "eighty-seven million, seven hundred three thousand, eight hundred ninety".