78212950 has 48 divisors (see below), whose sum is σ = 149276160. Its totient is φ = 30481920.

The previous prime is 78212941. The next prime is 78212951. The reversal of 78212950 is 5921287.

It is a super-2 number, since 2×78212950² = 12234531095405000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78212951) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 615787 + ... + 615913.

It is an arithmetic number, because the mean of its divisors is an integer number (3109920).

Almost surely, 2^78212950 is an apocalyptic number.

78212950 is a deficient number, since it is larger than the sum of its proper divisors (71063210).

78212950 is a wasteful number, since it uses less digits than its factorization.

78212950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361 (or 356 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 78212950 is about 8843.8085687107. The cubic root of 78212950 is about 427.6543450527.

The spelling of 78212950 in words is "seventy-eight million, two hundred twelve thousand, nine hundred fifty".