78266200 has 24 divisors (see below), whose sum is σ = 181969380. Its totient is φ = 31306400.

The previous prime is 78266189. The next prime is 78266203. The reversal of 78266200 is 266287.

It is a happy number.

It is a super-2 number, since 2×78266200² = 12251196124880000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78266203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 195466 + ... + 195865.

Almost surely, 2^78266200 is an apocalyptic number.

It is an amenable number.

78266200 is an abundant number, since it is smaller than the sum of its proper divisors (103703180).

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

78266200 is a wasteful number, since it uses less digits than its factorization.

78266200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391347 (or 391338 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 78266200 is about 8846.8186372277. The cubic root of 78266200 is about 427.7513768431.

The spelling of 78266200 in words is "seventy-eight million, two hundred sixty-six thousand, two hundred".