97278478 has 8 divisors (see below), whose sum is σ = 159183000. Its totient is φ = 44217480.

The previous prime is 97278473. The next prime is 97278481. The reversal of 97278478 is 87487279.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97278473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2210853 + ... + 2210896.

It is an arithmetic number, because the mean of its divisors is an integer number (19897875).

Almost surely, 2^97278478 is an apocalyptic number.

97278478 is a deficient number, since it is larger than the sum of its proper divisors (61904522).

97278478 is a wasteful number, since it uses less digits than its factorization.

97278478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4421762.

The product of its digits is 1580544, while the sum is 52.

The square root of 97278478 is about 9862.9852478851. The cubic root of 97278478 is about 459.9093677775.

The spelling of 97278478 in words is "ninety-seven million, two hundred seventy-eight thousand, four hundred seventy-eight".