78225044 has 12 divisors (see below), whose sum is σ = 137135124. Its totient is φ = 39043584.

The previous prime is 78225029. The next prime is 78225073. The reversal of 78225044 is 44052287.

It can be written as a sum of positive squares in 2 ways, for example, as 71402500 + 6822544 = 8450^2 + 2612^2 .

It is a super-2 number, since 2×78225044² = 12238315017603872, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78225044.

It is a congruent number.

It is an unprimeable number.

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, 14639 + ... + 19254.

It is an arithmetic number, because the mean of its divisors is an integer number (11427927).

Almost surely, 2^78225044 is an apocalyptic number.

It is an amenable number.

78225044 is a deficient number, since it is larger than the sum of its proper divisors (58910080).

78225044 is a wasteful number, since it uses less digits than its factorization.

78225044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34474 (or 34472 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 78225044 is about 8844.4922974697. The cubic root of 78225044 is about 427.6763865223.

The spelling of 78225044 in words is "seventy-eight million, two hundred twenty-five thousand, forty-four".