74423502 has 48 divisors (see below), whose sum is σ = 170740080. Its totient is φ = 24012288.

The previous prime is 74423449. The next prime is 74423509. The reversal of 74423502 is 20532447.

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 (74423509) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 385518 + ... + 385710.

It is an arithmetic number, because the mean of its divisors is an integer number (3557085).

Almost surely, 2^74423502 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74423502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85370040).

74423502 is an abundant number, since it is smaller than the sum of its proper divisors (96316578).

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

74423502 is a wasteful number, since it uses less digits than its factorization.

74423502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 74423502 is about 8626.9057025100. The cubic root of 74423502 is about 420.6330250157.

Adding to 74423502 its reverse (20532447), we get a palindrome (94955949).

The spelling of 74423502 in words is "seventy-four million, four hundred twenty-three thousand, five hundred two".