78074381 has 16 divisors (see below), whose sum is σ = 97918848. Its totient is φ = 60475200.

The previous prime is 78074341. The next prime is 78074383. The reversal of 78074381 is 18347087.

It is a cyclic number.

It is not a de Polignac number, because 78074381 - 2⁶ = 78074317 is a prime.

It is a super-2 number, since 2×78074381² = 12191217937066322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78074383) 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, 10391 + ... + 16251.

It is an arithmetic number, because the mean of its divisors is an integer number (6119928).

Almost surely, 2^78074381 is an apocalyptic number.

It is an amenable number.

78074381 is a deficient number, since it is larger than the sum of its proper divisors (19844467).

78074381 is a wasteful number, since it uses less digits than its factorization.

78074381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6052.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 78074381 is about 8835.9708578062. The cubic root of 78074381 is about 427.4016389643.

The spelling of 78074381 in words is "seventy-eight million, seventy-four thousand, three hundred eighty-one".