75402993 has 16 divisors (see below), whose sum is σ = 107145216. Its totient is φ = 47058000.

The previous prime is 75402991. The next prime is 75402997. The reversal of 75402993 is 39920457.

It is not a de Polignac number, because 75402993 - 2¹ = 75402991 is a prime.

It is a super-2 number, since 2×75402993² = 11371222706716098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (75402991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8383 + ... + 14868.

It is an arithmetic number, because the mean of its divisors is an integer number (6696576).

Almost surely, 2^75402993 is an apocalyptic number.

It is an amenable number.

75402993 is a deficient number, since it is larger than the sum of its proper divisors (31742223).

75402993 is a wasteful number, since it uses less digits than its factorization.

75402993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23324.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 75402993 is about 8683.4896786949. The cubic root of 75402993 is about 422.4703115117.

The spelling of 75402993 in words is "seventy-five million, four hundred two thousand, nine hundred ninety-three".