74111920 has 20 divisors (see below), whose sum is σ = 172310400. Its totient is φ = 29644736.

The previous prime is 74111897. The next prime is 74111923. The reversal of 74111920 is 2911147.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74111923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463120 + ... + 463279.

It is an arithmetic number, because the mean of its divisors is an integer number (8615520).

Almost surely, 2^74111920 is an apocalyptic number.

It is an amenable number.

74111920 is an abundant number, since it is smaller than the sum of its proper divisors (98198480).

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

74111920 is a wasteful number, since it uses less digits than its factorization.

74111920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926412 (or 926406 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 74111920 is about 8608.8280270894. The cubic root of 74111920 is about 420.0451954388.

The spelling of 74111920 in words is "seventy-four million, one hundred eleven thousand, nine hundred twenty".