78044002 has 4 divisors (see below), whose sum is σ = 117066006. Its totient is φ = 39022000.

The previous prime is 78043997. The next prime is 78044003. The reversal of 78044002 is 20044087.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 75012921 + 3031081 = 8661^2 + 1741^2 .

It is not an unprimeable number, because it can be changed into a prime (78044003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19510999 + ... + 19511002.

Almost surely, 2^78044002 is an apocalyptic number.

78044002 is a deficient number, since it is larger than the sum of its proper divisors (39022004).

78044002 is a wasteful number, since it uses less digits than its factorization.

78044002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39022003.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 78044002 is about 8834.2516378016. The cubic root of 78044002 is about 427.3461973088.

Adding to 78044002 its reverse (20044087), we get a palindrome (98088089).

The spelling of 78044002 in words is "seventy-eight million, forty-four thousand, two".