78455102 has 32 divisors (see below), whose sum is σ = 137518560. Its totient is φ = 33172480.

The previous prime is 78455101. The next prime is 78455107. The reversal of 78455102 is 20155487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78455101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32108 + ... + 34464.

It is an arithmetic number, because the mean of its divisors is an integer number (4297455).

Almost surely, 2^78455102 is an apocalyptic number.

78455102 is a deficient number, since it is larger than the sum of its proper divisors (59063458).

78455102 is a wasteful number, since it uses less digits than its factorization.

78455102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2476.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 78455102 is about 8857.4884702155. The cubic root of 78455102 is about 428.0952382174.

The spelling of 78455102 in words is "seventy-eight million, four hundred fifty-five thousand, one hundred two".