74248638 has 8 divisors (see below), whose sum is σ = 148497288. Its totient is φ = 24749544.

The previous prime is 74248589. The next prime is 74248661. The reversal of 74248638 is 83684247.

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

74248638 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 74248638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6187381 + ... + 6187392.

It is an arithmetic number, because the mean of its divisors is an integer number (18562161).

Almost surely, 2^74248638 is an apocalyptic number.

74248638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

74248638 is a wasteful number, since it uses less digits than its factorization.

74248638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12374778.

The product of its digits is 258048, while the sum is 42.

The square root of 74248638 is about 8616.7649381888. The cubic root of 74248638 is about 420.3033296314.

The spelling of 74248638 in words is "seventy-four million, two hundred forty-eight thousand, six hundred thirty-eight".