78073954 has 12 divisors (see below), whose sum is σ = 136231254. Its totient is φ = 33460224.

The previous prime is 78073951. The next prime is 78073967. The reversal of 78073954 is 45937087.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 74736025 + 3337929 = 8645^2 + 1827^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 78073954.

It is not an unprimeable number, because it can be changed into a prime (78073951) 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 in 5 ways as a sum of consecutive naturals, for example, 398239 + ... + 398434.

Almost surely, 2^78073954 is an apocalyptic number.

78073954 is a deficient number, since it is larger than the sum of its proper divisors (58157300).

78073954 is a wasteful number, since it uses less digits than its factorization.

78073954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796689 (or 796682 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 78073954 is about 8835.9466951765. The cubic root of 78073954 is about 427.4008597892.

The spelling of 78073954 in words is "seventy-eight million, seventy-three thousand, nine hundred fifty-four".