61940424 has 128 divisors (see below), whose sum is σ = 193536000. Its totient is φ = 16084224.

The previous prime is 61940419. The next prime is 61940453. The reversal of 61940424 is 42404916.

It is a super-2 number, since 2×61940424² = 7673232250599552, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61940391 and 61940400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172357 + ... + 172715.

It is an arithmetic number, because the mean of its divisors is an integer number (1512000).

Almost surely, 2^61940424 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 61940424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96768000).

61940424 is an abundant number, since it is smaller than the sum of its proper divisors (131595576).

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

61940424 is a wasteful number, since it uses less digits than its factorization.

61940424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 61940424 is about 7870.2238849984. The cubic root of 61940424 is about 395.6623486474.

The spelling of 61940424 in words is "sixty-one million, nine hundred forty thousand, four hundred twenty-four".