74378455 has 8 divisors (see below), whose sum is σ = 92133504. Its totient is φ = 57583200.

The previous prime is 74378443. The next prime is 74378461. The reversal of 74378455 is 55487347.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-74378455 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239776 + ... + 240085.

It is an arithmetic number, because the mean of its divisors is an integer number (11516688).

Almost surely, 2^74378455 is an apocalyptic number.

74378455 is a deficient number, since it is larger than the sum of its proper divisors (17755049).

74378455 is a wasteful number, since it uses less digits than its factorization.

74378455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479897.

The product of its digits is 470400, while the sum is 43.

The square root of 74378455 is about 8624.2944638967. The cubic root of 74378455 is about 420.5481410760.

The spelling of 74378455 in words is "seventy-four million, three hundred seventy-eight thousand, four hundred fifty-five".