78812150 has 12 divisors (see below), whose sum is σ = 146590692. Its totient is φ = 31524840.

The previous prime is 78812131. The next prime is 78812161. The reversal of 78812150 is 5121887.

It is a happy number.

It is a super-2 number, since 2×78812150² = 12422709975245000, 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 in 5 ways as a sum of consecutive naturals, for example, 788072 + ... + 788171.

It is an arithmetic number, because the mean of its divisors is an integer number (12215891).

Almost surely, 2^78812150 is an apocalyptic number.

78812150 is a deficient number, since it is larger than the sum of its proper divisors (67778542).

78812150 is a wasteful number, since it uses less digits than its factorization.

78812150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576255 (or 1576250 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 78812150 is about 8877.6207398154. The cubic root of 78812150 is about 428.7436738860.

The spelling of 78812150 in words is "seventy-eight million, eight hundred twelve thousand, one hundred fifty".