74222532 has 36 divisors (see below), whose sum is σ = 188173440. Its totient is φ = 24667632.

The previous prime is 74222507. The next prime is 74222537. The reversal of 74222532 is 23522247.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 74222496 and 74222505.

It is not an unprimeable number, because it can be changed into a prime (74222537) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10053 + ... + 15795.

It is an arithmetic number, because the mean of its divisors is an integer number (5227040).

Almost surely, 2^74222532 is an apocalyptic number.

74222532 is the 4308-th decagonal number.

It is an amenable number.

74222532 is an abundant number, since it is smaller than the sum of its proper divisors (113950908).

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

74222532 is a wasteful number, since it uses less digits than its factorization.

74222532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6112 (or 6107 counting only the distinct ones).

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

The square root of 74222532 is about 8615.2499673544. The cubic root of 74222532 is about 420.2540639692.

Adding to 74222532 its reverse (23522247), we get a palindrome (97744779).

The spelling of 74222532 in words is "seventy-four million, two hundred twenty-two thousand, five hundred thirty-two".