78210494 has 8 divisors (see below), whose sum is σ = 117571608. Its totient is φ = 39019960.

The previous prime is 78210481. The next prime is 78210527. The reversal of 78210494 is 49401287.

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

It is a super-2 number, since 2×78210494² = 12233762743448072, which contains 22 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, 41492 + ... + 43335.

It is an arithmetic number, because the mean of its divisors is an integer number (14696451).

Almost surely, 2^78210494 is an apocalyptic number.

78210494 is a deficient number, since it is larger than the sum of its proper divisors (39361114).

78210494 is a wasteful number, since it uses less digits than its factorization.

78210494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85290.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 78210494 is about 8843.6697134165. The cubic root of 78210494 is about 427.6498686837.

The spelling of 78210494 in words is "seventy-eight million, two hundred ten thousand, four hundred ninety-four".