61136448 has 28 divisors (see below), whose sum is σ = 161757360. Its totient is φ = 20378752.

The previous prime is 61136447. The next prime is 61136473. The reversal of 61136448 is 84463116.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (61136443) 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, 159018 + ... + 159401.

Almost surely, 2^61136448 is an apocalyptic number.

It is an amenable number.

61136448 is an abundant number, since it is smaller than the sum of its proper divisors (100620912).

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

61136448 is a wasteful number, since it uses less digits than its factorization.

61136448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318434 (or 318424 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 61136448 is about 7818.9799846272. The cubic root of 61136448 is about 393.9430118475.

It can be divided in two parts, 6113 and 6448, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 61136448 in words is "sixty-one million, one hundred thirty-six thousand, four hundred forty-eight".