97204378 has 4 divisors (see below), whose sum is σ = 145806570. Its totient is φ = 48602188.

The previous prime is 97204369. The next prime is 97204423. The reversal of 97204378 is 87340279.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87340279 = 13 ⋅6718483.

It can be written as a sum of positive squares in only one way, i.e., 91068849 + 6135529 = 9543^2 + 2477^2 .

It is a super-2 number, since 2×97204378² = 18897382204733768, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 97204378.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24301093 + ... + 24301096.

Almost surely, 2^97204378 is an apocalyptic number.

97204378 is a deficient number, since it is larger than the sum of its proper divisors (48602192).

97204378 is a wasteful number, since it uses less digits than its factorization.

97204378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48602191.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 97204378 is about 9859.2280630889. The cubic root of 97204378 is about 459.7925624245.

The spelling of 97204378 in words is "ninety-seven million, two hundred four thousand, three hundred seventy-eight".