78055302 has 32 divisors (see below), whose sum is σ = 169424640. Its totient is φ = 23830560.

The previous prime is 78055301. The next prime is 78055409. The reversal of 78055302 is 20355087.

It is a happy number.

It is a super-2 number, since 2×78055302² = 12185260340622408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78055302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78055301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6399 + ... + 14037.

It is an arithmetic number, because the mean of its divisors is an integer number (5294520).

Almost surely, 2^78055302 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78055302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84712320).

78055302 is an abundant number, since it is smaller than the sum of its proper divisors (91369338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78055302 is a wasteful number, since it uses less digits than its factorization.

78055302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7788.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 78055302 is about 8834.8911708068. The cubic root of 78055302 is about 427.3668214818.

The spelling of 78055302 in words is "seventy-eight million, fifty-five thousand, three hundred two".