61274772 has 96 divisors (see below), whose sum is σ = 180163200. Its totient is φ = 17853696.

The previous prime is 61274761. The next prime is 61274777. The reversal of 61274772 is 27747216.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61274777) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25528 + ... + 27824.

It is an arithmetic number, because the mean of its divisors is an integer number (1876700).

Almost surely, 2^61274772 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 61274772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90081600).

61274772 is an abundant number, since it is smaller than the sum of its proper divisors (118888428).

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

61274772 is a wasteful number, since it uses less digits than its factorization.

61274772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2342 (or 2334 counting only the distinct ones).

The product of its digits is 32928, while the sum is 36.

The square root of 61274772 is about 7827.8203862889. The cubic root of 61274772 is about 394.2398927307.

The spelling of 61274772 in words is "sixty-one million, two hundred seventy-four thousand, seven hundred seventy-two".