61840422 has 80 divisors (see below), whose sum is σ = 165318912. Its totient is φ = 16893360.

The previous prime is 61840409. The next prime is 61840447. The reversal of 61840422 is 22404816.

61840422 is a `hidden beast` number, since 618 + 4 + 0 + 42 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 24897 + ... + 27267.

Almost surely, 2^61840422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61840422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82659456).

61840422 is an abundant number, since it is smaller than the sum of its proper divisors (103478490).

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

61840422 is a wasteful number, since it uses less digits than its factorization.

61840422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2415 (or 2406 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 61840422 is about 7863.8681321599. The cubic root of 61840422 is about 395.4493034004.

The spelling of 61840422 in words is "sixty-one million, eight hundred forty thousand, four hundred twenty-two".