61040038 has 4 divisors (see below), whose sum is σ = 91560060. Its totient is φ = 30520018.

The previous prime is 61040033. The next prime is 61040039. The reversal of 61040038 is 83004016.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61040033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15260008 + ... + 15260011.

It is an arithmetic number, because the mean of its divisors is an integer number (22890015).

Almost surely, 2^61040038 is an apocalyptic number.

61040038 is a deficient number, since it is larger than the sum of its proper divisors (30520022).

61040038 is a wasteful number, since it uses less digits than its factorization.

61040038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30520021.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 61040038 is about 7812.8124257530. The cubic root of 61040038 is about 393.7358248697.

The spelling of 61040038 in words is "sixty-one million, forty thousand, thirty-eight".