78074408 has 8 divisors (see below), whose sum is σ = 146389530. Its totient is φ = 39037200.

The previous prime is 78074383. The next prime is 78074429. The reversal of 78074408 is 80447087.

It can be written as a sum of positive squares in only one way, i.e., 66227044 + 11847364 = 8138^2 + 3442^2 .

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

It is a super-2 number, since 2×78074408² = 12191226369100928, which contains 22 as substring.

It is an unprimeable number.

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, 4879643 + ... + 4879658.

Almost surely, 2^78074408 is an apocalyptic number.

It is an amenable number.

78074408 is a deficient number, since it is larger than the sum of its proper divisors (68315122).

78074408 is a wasteful number, since it uses less digits than its factorization.

78074408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9759307 (or 9759303 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 78074408 is about 8835.9723856517. The cubic root of 78074408 is about 427.4016882329.

The spelling of 78074408 in words is "seventy-eight million, seventy-four thousand, four hundred eight".