82087870 has 8 divisors (see below), whose sum is σ = 147758184. Its totient is φ = 32835144.

The previous prime is 82087813. The next prime is 82087871. The reversal of 82087870 is 7878028.

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

It is a super-2 number, since 2×82087870² = 13476836802273800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82087871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4104384 + ... + 4104403.

It is an arithmetic number, because the mean of its divisors is an integer number (18469773).

Almost surely, 2^82087870 is an apocalyptic number.

82087870 is a deficient number, since it is larger than the sum of its proper divisors (65670314).

82087870 is a wasteful number, since it uses less digits than its factorization.

82087870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8208794.

The product of its (nonzero) digits is 50176, while the sum is 40.

The square root of 82087870 is about 9060.2356481496. The cubic root of 82087870 is about 434.6032759387.

The spelling of 82087870 in words is "eighty-two million, eighty-seven thousand, eight hundred seventy".