75223732 has 12 divisors (see below), whose sum is σ = 135888256. Its totient is φ = 36398520.

The previous prime is 75223711. The next prime is 75223739. The reversal of 75223732 is 23732257.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 75223694 and 75223703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75223739) 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, 303198 + ... + 303445.

Almost surely, 2^75223732 is an apocalyptic number.

It is an amenable number.

75223732 is a deficient number, since it is larger than the sum of its proper divisors (60664524).

75223732 is a wasteful number, since it uses less digits than its factorization.

75223732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606678 (or 606676 counting only the distinct ones).

The product of its digits is 17640, while the sum is 31.

The square root of 75223732 is about 8673.1615919456. The cubic root of 75223732 is about 422.1352560909.

Adding to 75223732 its reverse (23732257), we get a palindrome (98955989).

The spelling of 75223732 in words is "seventy-five million, two hundred twenty-three thousand, seven hundred thirty-two".