75220736 has 18 divisors (see below), whose sum is σ = 150148152. Its totient is φ = 37610240.

The previous prime is 75220721. The next prime is 75220777. The reversal of 75220736 is 63702257.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 146660 + ... + 147171.

It is an arithmetic number, because the mean of its divisors is an integer number (8341564).

Almost surely, 2^75220736 is an apocalyptic number.

It is an amenable number.

75220736 is a deficient number, since it is larger than the sum of its proper divisors (74927416).

75220736 is an equidigital number, since it uses as much as digits as its factorization.

75220736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293847 (or 293833 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 75220736 is about 8672.9888735084. The cubic root of 75220736 is about 422.1296517690.

The spelling of 75220736 in words is "seventy-five million, two hundred twenty thousand, seven hundred thirty-six".