78229352 has 8 divisors (see below), whose sum is σ = 146680050. Its totient is φ = 39114672.

The previous prime is 78229343. The next prime is 78229363. The reversal of 78229352 is 25392287.

It can be written as a sum of positive squares in only one way, i.e., 77334436 + 894916 = 8794^2 + 946^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×78229352² = 12239663028679808, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4889327 + ... + 4889342.

Almost surely, 2^78229352 is an apocalyptic number.

It is an amenable number.

78229352 is a deficient number, since it is larger than the sum of its proper divisors (68450698).

78229352 is a wasteful number, since it uses less digits than its factorization.

78229352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9778675 (or 9778671 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 78229352 is about 8844.7358355126. The cubic root of 78229352 is about 427.6842373586.

The spelling of 78229352 in words is "seventy-eight million, two hundred twenty-nine thousand, three hundred fifty-two".