74243870 has 16 divisors (see below), whose sum is σ = 133740288. Its totient is φ = 29675040.

The previous prime is 74243833. The next prime is 74243881. The reversal of 74243870 is 7834247.

It is a self number, because there is not a number n which added to its sum of digits gives 74243870.

It is a congruent number.

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, 19352 + ... + 22868.

It is an arithmetic number, because the mean of its divisors is an integer number (8358768).

Almost surely, 2^74243870 is an apocalyptic number.

74243870 is a deficient number, since it is larger than the sum of its proper divisors (59496418).

74243870 is a wasteful number, since it uses less digits than its factorization.

74243870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5635.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 74243870 is about 8616.4882637882. The cubic root of 74243870 is about 420.2943326126.

The spelling of 74243870 in words is "seventy-four million, two hundred forty-three thousand, eight hundred seventy".