78953870 has 8 divisors (see below), whose sum is σ = 142116984. Its totient is φ = 31581544.

The previous prime is 78953867. The next prime is 78953923. The reversal of 78953870 is 7835987.

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

It is a Curzon number.

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, 3947684 + ... + 3947703.

It is an arithmetic number, because the mean of its divisors is an integer number (17764623).

Almost surely, 2^78953870 is an apocalyptic number.

78953870 is a deficient number, since it is larger than the sum of its proper divisors (63163114).

78953870 is a wasteful number, since it uses less digits than its factorization.

78953870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7895394.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 78953870 is about 8885.5990231385. The cubic root of 78953870 is about 429.0005089440. Note that the first 3 decimals are identical.

The spelling of 78953870 in words is "seventy-eight million, nine hundred fifty-three thousand, eight hundred seventy".