74157378 has 16 divisors (see below), whose sum is σ = 148424160. Its totient is φ = 24700896.

The previous prime is 74157367. The next prime is 74157389. The reversal of 74157378 is 87375147.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (74157367) and next prime (74157389).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6213 + ... + 13671.

It is an arithmetic number, because the mean of its divisors is an integer number (9276510).

Almost surely, 2^74157378 is an apocalyptic number.

74157378 is an abundant number, since it is smaller than the sum of its proper divisors (74266782).

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

74157378 is a wasteful number, since it uses less digits than its factorization.

74157378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9121.

The product of its digits is 164640, while the sum is 42.

The square root of 74157378 is about 8611.4678191351. The cubic root of 74157378 is about 420.1310588727.

The spelling of 74157378 in words is "seventy-four million, one hundred fifty-seven thousand, three hundred seventy-eight".