82740730 has 8 divisors (see below), whose sum is σ = 148933332. Its totient is φ = 33096288.

The previous prime is 82740641. The next prime is 82740737. The reversal of 82740730 is 3704728.

It can be written as a sum of positive squares in 2 ways, for example, as 82682649 + 58081 = 9093^2 + 241^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 82740692 and 82740701.

It is not an unprimeable number, because it can be changed into a prime (82740737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4137027 + ... + 4137046.

Almost surely, 2^82740730 is an apocalyptic number.

82740730 is a deficient number, since it is larger than the sum of its proper divisors (66192602).

82740730 is a wasteful number, since it uses less digits than its factorization.

82740730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8274080.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 82740730 is about 9096.1931597784. The cubic root of 82740730 is about 435.7523949723.

The spelling of 82740730 in words is "eighty-two million, seven hundred forty thousand, seven hundred thirty".