61239286 has 16 divisors (see below), whose sum is σ = 93934800. Its totient is φ = 29933568.

The previous prime is 61239257. The next prime is 61239293. The reversal of 61239286 is 68293216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21430 + ... + 24118.

It is an arithmetic number, because the mean of its divisors is an integer number (5870925).

Almost surely, 2^61239286 is an apocalyptic number.

61239286 is a deficient number, since it is larger than the sum of its proper divisors (32695514).

61239286 is a wasteful number, since it uses less digits than its factorization.

61239286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2943.

The product of its digits is 31104, while the sum is 37.

The square root of 61239286 is about 7825.5533989616. The cubic root of 61239286 is about 394.1637727773.

The spelling of 61239286 in words is "sixty-one million, two hundred thirty-nine thousand, two hundred eighty-six".