61274928 has 160 divisors (see below), whose sum is σ = 189987840. Its totient is φ = 16773120.

The previous prime is 61274903. The next prime is 61274963. The reversal of 61274928 is 82947216.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 542200 + ... + 542312.

It is an arithmetic number, because the mean of its divisors is an integer number (1187424).

Almost surely, 2^61274928 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 61274928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94993920).

61274928 is an abundant number, since it is smaller than the sum of its proper divisors (128712912).

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

61274928 is a wasteful number, since it uses less digits than its factorization.

61274928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 221 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 61274928 is about 7827.8303507422. The cubic root of 61274928 is about 394.2402272968.

The spelling of 61274928 in words is "sixty-one million, two hundred seventy-four thousand, nine hundred twenty-eight".