61328738 has 8 divisors (see below), whose sum is σ = 93728988. Its totient is φ = 30085744.

The previous prime is 61328737. The next prime is 61328747. The reversal of 61328738 is 83782316.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 57805609 + 3523129 = 7603^2 + 1877^2 .

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

It is a super-2 number, since 2×61328738² = 7522428209345288, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61328731) 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, 289181 + ... + 289392.

Almost surely, 2^61328738 is an apocalyptic number.

61328738 is a deficient number, since it is larger than the sum of its proper divisors (32400250).

61328738 is a wasteful number, since it uses less digits than its factorization.

61328738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578628.

The product of its digits is 48384, while the sum is 38.

The square root of 61328738 is about 7831.2666919216. The cubic root of 61328738 is about 394.3555972666.

The spelling of 61328738 in words is "sixty-one million, three hundred twenty-eight thousand, seven hundred thirty-eight".