78044442 has 16 divisors (see below), whose sum is σ = 178387392. Its totient is φ = 22298400.

The previous prime is 78044431. The next prime is 78044471. The reversal of 78044442 is 24444087.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 929059 + ... + 929142.

It is an arithmetic number, because the mean of its divisors is an integer number (11149212).

Almost surely, 2^78044442 is an apocalyptic number.

78044442 is an abundant number, since it is smaller than the sum of its proper divisors (100342950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78044442 is a wasteful number, since it uses less digits than its factorization.

78044442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858213.

The product of its (nonzero) digits is 28672, while the sum is 33.

The square root of 78044442 is about 8834.2765408380. The cubic root of 78044442 is about 427.3470004112.

It can be divided in two parts, 7804 and 4442, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 78044442 in words is "seventy-eight million, forty-four thousand, four hundred forty-two".