61440458 has 8 divisors (see below), whose sum is σ = 92298852. Its totient is φ = 30674176.

The previous prime is 61440439. The next prime is 61440487. The reversal of 61440458 is 85404416.

It can be written as a sum of positive squares in 2 ways, for example, as 52896529 + 8543929 = 7273^2 + 2923^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21335 + ... + 24042.

Almost surely, 2^61440458 is an apocalyptic number.

61440458 is a deficient number, since it is larger than the sum of its proper divisors (30858394).

61440458 is a wasteful number, since it uses less digits than its factorization.

61440458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46056.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 61440458 is about 7838.3963921200. The cubic root of 61440458 is about 394.5949123810.

The spelling of 61440458 in words is "sixty-one million, four hundred forty thousand, four hundred fifty-eight".