87299278 has 8 divisors (see below), whose sum is σ = 142853400. Its totient is φ = 39681480.

The previous prime is 87299269. The next prime is 87299287.

87299278 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (87299269) and next prime (87299287).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×87299278⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1984053 + ... + 1984096.

It is an arithmetic number, because the mean of its divisors is an integer number (17856675).

Almost surely, 2^87299278 is an apocalyptic number.

87299278 is a deficient number, since it is larger than the sum of its proper divisors (55554122).

87299278 is a wasteful number, since it uses less digits than its factorization.

87299278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3968162.

The product of its digits is 1016064, while the sum is 52.

The square root of 87299278 is about 9343.4082646537. The cubic root of 87299278 is about 443.6122707394.

The spelling of 87299278 in words is "eighty-seven million, two hundred ninety-nine thousand, two hundred seventy-eight".