61972272 has 60 divisors (see below), whose sum is σ = 173967040. Its totient is φ = 20594304.

The previous prime is 61972271. The next prime is 61972289. The reversal of 61972272 is 27227916.

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

It is not an unprimeable number, because it can be changed into a prime (61972271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87054 + ... + 87762.

Almost surely, 2^61972272 is an apocalyptic number.

It is an amenable number.

61972272 is an abundant number, since it is smaller than the sum of its proper divisors (111994768).

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

61972272 is a wasteful number, since it uses less digits than its factorization.

61972272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330 (or 1321 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 61972272 is about 7872.2469473461. The cubic root of 61972272 is about 395.7301497945.

The spelling of 61972272 in words is "sixty-one million, nine hundred seventy-two thousand, two hundred seventy-two".