78335072 has 12 divisors (see below), whose sum is σ = 154222236. Its totient is φ = 39167520.

The previous prime is 78335071. The next prime is 78335087. The reversal of 78335072 is 27053387.

It is a super-2 number, since 2×78335072² = 12272767010490368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78335071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1223954 + ... + 1224017.

It is an arithmetic number, because the mean of its divisors is an integer number (12851853).

Almost surely, 2^78335072 is an apocalyptic number.

It is an amenable number.

78335072 is a deficient number, since it is larger than the sum of its proper divisors (75887164).

78335072 is a wasteful number, since it uses less digits than its factorization.

78335072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2447981 (or 2447973 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 78335072 is about 8850.7102539853. The cubic root of 78335072 is about 427.8768096851.

The spelling of 78335072 in words is "seventy-eight million, three hundred thirty-five thousand, seventy-two".