78273141 has 16 divisors (see below), whose sum is σ = 112539840. Its totient is φ = 48228480.

The previous prime is 78273133. The next prime is 78273149. The reversal of 78273141 is 14137287.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78273133) and next prime (78273149).

It is not a de Polignac number, because 78273141 - 2³ = 78273133 is a prime.

It is a super-2 number, since 2×78273141² = 12253369204011762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78273149) 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, 14410 + ... + 19083.

It is an arithmetic number, because the mean of its divisors is an integer number (7033740).

Almost surely, 2^78273141 is an apocalyptic number.

It is an amenable number.

78273141 is a deficient number, since it is larger than the sum of its proper divisors (34266699).

78273141 is a wasteful number, since it uses less digits than its factorization.

78273141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33556.

The product of its digits is 9408, while the sum is 33.

The square root of 78273141 is about 8847.2109164414. The cubic root of 78273141 is about 427.7640214438.

The spelling of 78273141 in words is "seventy-eight million, two hundred seventy-three thousand, one hundred forty-one".