74021472 has 96 divisors (see below), whose sum is σ = 246758400. Its totient is φ = 21147264.

The previous prime is 74021471. The next prime is 74021501. The reversal of 74021472 is 27412047.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74021471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72 + ... + 12167.

It is an arithmetic number, because the mean of its divisors is an integer number (2570400).

Almost surely, 2^74021472 is an apocalyptic number.

74021472 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74021472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123379200).

74021472 is an abundant number, since it is smaller than the sum of its proper divisors (172736928).

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

74021472 is a wasteful number, since it uses less digits than its factorization.

74021472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12265 (or 12251 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 74021472 is about 8603.5732111722. The cubic root of 74021472 is about 419.8742480667.

The spelling of 74021472 in words is "seventy-four million, twenty-one thousand, four hundred seventy-two".