61240286 has 8 divisors (see below), whose sum is σ = 95028120. Its totient is φ = 29564248.

The previous prime is 61240261. The next prime is 61240301. The reversal of 61240286 is 68204216.

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

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 527876 + ... + 527991.

It is an arithmetic number, because the mean of its divisors is an integer number (11878515).

Almost surely, 2^61240286 is an apocalyptic number.

61240286 is a deficient number, since it is larger than the sum of its proper divisors (33787834).

61240286 is a wasteful number, since it uses less digits than its factorization.

61240286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055898.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 61240286 is about 7825.6172919457. The cubic root of 61240286 is about 394.1659182499.

The spelling of 61240286 in words is "sixty-one million, two hundred forty thousand, two hundred eighty-six".