61237040 has 60 divisors (see below), whose sum is σ = 148938384. Its totient is φ = 23413632.

The previous prime is 61237037. The next prime is 61237049. The reversal of 61237040 is 4073216.

61237040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 61236997 and 61237015.

It is not an unprimeable number, because it can be changed into a prime (61237049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41597 + ... + 43043.

Almost surely, 2^61237040 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 61237040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74469192).

61237040 is an abundant number, since it is smaller than the sum of its proper divisors (87701344).

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

61237040 is a wasteful number, since it uses less digits than its factorization.

61237040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506 (or 1477 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 61237040 is about 7825.4098934177. The cubic root of 61237040 is about 394.1589539607.

The spelling of 61237040 in words is "sixty-one million, two hundred thirty-seven thousand, forty".