78028514 has 4 divisors (see below), whose sum is σ = 117042774. Its totient is φ = 39014256.

The previous prime is 78028501. The next prime is 78028543. The reversal of 78028514 is 41582087.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 53772889 + 24255625 = 7333^2 + 4925^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19507127 + ... + 19507130.

Almost surely, 2^78028514 is an apocalyptic number.

78028514 is a deficient number, since it is larger than the sum of its proper divisors (39014260).

78028514 is a wasteful number, since it uses less digits than its factorization.

78028514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39014259.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 78028514 is about 8833.3750061910. The cubic root of 78028514 is about 427.3179261813.

The spelling of 78028514 in words is "seventy-eight million, twenty-eight thousand, five hundred fourteen".