78202112 has 18 divisors (see below), whose sum is σ = 156099258. Its totient is φ = 39100928.

The previous prime is 78202109. The next prime is 78202121. The reversal of 78202112 is 21120287.

It can be written as a sum of positive squares in only one way, i.e., 47554816 + 30647296 = 6896^2 + 5536^2 .

It is a super-2 number, since 2×78202112² = 12231140642521088, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152483 + ... + 152994.

It is an arithmetic number, because the mean of its divisors is an integer number (8672181).

Almost surely, 2^78202112 is an apocalyptic number.

It is an amenable number.

78202112 is a deficient number, since it is larger than the sum of its proper divisors (77897146).

78202112 is an equidigital number, since it uses as much as digits as its factorization.

78202112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305493 (or 305479 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 78202112 is about 8843.1958024235. The cubic root of 78202112 is about 427.6345907286.

Adding to 78202112 its reverse (21120287), we get a palindrome (99322399).

The spelling of 78202112 in words is "seventy-eight million, two hundred two thousand, one hundred twelve".