61839040 has 28 divisors (see below), whose sum is σ = 147254976. Its totient is φ = 24735488.

The previous prime is 61838999. The next prime is 61839059. The reversal of 61839040 is 4093816.

It is a junction number, because it is equal to n+sod(n) for n = 61838993 and 61839011.

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, 96304 + ... + 96943.

Almost surely, 2^61839040 is an apocalyptic number.

It is an amenable number.

61839040 is an abundant number, since it is smaller than the sum of its proper divisors (85415936).

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

61839040 is a wasteful number, since it uses less digits than its factorization.

61839040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193264 (or 193254 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 61839040 is about 7863.7802614264. The cubic root of 61839040 is about 395.4463575656.

The spelling of 61839040 in words is "sixty-one million, eight hundred thirty-nine thousand, forty".