61286292 has 72 divisors (see below), whose sum is σ = 165110400. Its totient is φ = 19100928.

The previous prime is 61286279. The next prime is 61286293. The reversal of 61286292 is 29268216.

It is a happy number.

61286292 is a `hidden beast` number, since 6 + 1 + 28 + 629 + 2 = 666.

It is a super-3 number, since 3×61286292³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61286293) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146059 + ... + 146477.

It is an arithmetic number, because the mean of its divisors is an integer number (2293200).

Almost surely, 2^61286292 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61286292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82555200).

61286292 is an abundant number, since it is smaller than the sum of its proper divisors (103824108).

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

61286292 is a wasteful number, since it uses less digits than its factorization.

61286292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685 (or 680 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 61286292 is about 7828.5561887234. The cubic root of 61286292 is about 394.2645976178.

The spelling of 61286292 in words is "sixty-one million, two hundred eighty-six thousand, two hundred ninety-two".