73399770 has 40 divisors (see below), whose sum is σ = 197366004. Its totient is φ = 19573056.

The previous prime is 73399751. The next prime is 73399771. The reversal of 73399770 is 7799337.

It can be written as a sum of positive squares in 2 ways, for example, as 66634569 + 6765201 = 8163^2 + 2601^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (73399771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 44499 + ... + 46118.

Almost surely, 2^73399770 is an apocalyptic number.

73399770 is an abundant number, since it is smaller than the sum of its proper divisors (123966234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73399770 is a wasteful number, since it uses less digits than its factorization.

73399770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90636 (or 90627 counting only the distinct ones).

The product of its (nonzero) digits is 250047, while the sum is 45.

The square root of 73399770 is about 8567.3665732242. The cubic root of 73399770 is about 418.6954419156.

The spelling of 73399770 in words is "seventy-three million, three hundred ninety-nine thousand, seven hundred seventy".