61903872 has 88 divisors (see below), whose sum is σ = 183411200. Its totient is φ = 20625408.

The previous prime is 61903859. The next prime is 61903889. The reversal of 61903872 is 27830916.

61903872 is a `hidden beast` number, since 619 + 0 + 38 + 7 + 2 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26529 + ... + 28767.

Almost surely, 2^61903872 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 61903872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91705600).

61903872 is an abundant number, since it is smaller than the sum of its proper divisors (121507328).

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

61903872 is a wasteful number, since it uses less digits than its factorization.

61903872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2268 (or 2244 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 61903872 is about 7867.9013720305. The cubic root of 61903872 is about 395.5845045139.

The spelling of 61903872 in words is "sixty-one million, nine hundred three thousand, eight hundred seventy-two".