73157749 has 36 divisors (see below), whose sum is σ = 94123744. Its totient is φ = 55657728.

The previous prime is 73157743. The next prime is 73157759. The reversal of 73157749 is 94775137.

It is not a de Polignac number, because 73157749 - 2⁵ = 73157717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73157743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1701322 + ... + 1701364.

Almost surely, 2^73157749 is an apocalyptic number.

It is an amenable number.

73157749 is a deficient number, since it is larger than the sum of its proper divisors (20965995).

73157749 is a wasteful number, since it uses less digits than its factorization.

73157749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 96 counting only the distinct ones).

The product of its digits is 185220, while the sum is 43.

The square root of 73157749 is about 8553.2303254385. The cubic root of 73157749 is about 418.2347471514.

The spelling of 73157749 in words is "seventy-three million, one hundred fifty-seven thousand, seven hundred forty-nine".