75720002 has 12 divisors (see below), whose sum is σ = 118734630. Its totient is φ = 36213408.

The previous prime is 75719993. The next prime is 75720013. The reversal of 75720002 is 20002757.

It can be written as a sum of positive squares in only one way, i.e., 55190041 + 20529961 = 7429^2 + 4531^2 .

It is a super-3 number, since 3×75720002³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 75720002.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34727 + ... + 36842.

Almost surely, 2^75720002 is an apocalyptic number.

75720002 is a deficient number, since it is larger than the sum of its proper divisors (43014628).

75720002 is a wasteful number, since it uses less digits than its factorization.

75720002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71617 (or 71594 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 23.

The square root of 75720002 is about 8701.7240820426. The cubic root of 75720002 is about 423.0615331499.

Adding to 75720002 its reverse (20002757), we get a palindrome (95722759).

The spelling of 75720002 in words is "seventy-five million, seven hundred twenty thousand, two".