27920772 has 36 divisors (see below), whose sum is σ = 76994736. Its totient is φ = 8460720.

The previous prime is 27920719. The next prime is 27920779. The reversal of 27920772 is 27702972.

It is a tau number, because it is divible by the number of its divisors (36).

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 (27920779) 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, 34858 + ... + 35649.

Almost surely, 2^27920772 is an apocalyptic number.

27920772 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

27920772 is an abundant number, since it is smaller than the sum of its proper divisors (49073964).

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

27920772 is a wasteful number, since it uses less digits than its factorization.

27920772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70528 (or 70523 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 27920772 is about 5284.0109765215. The cubic root of 27920772 is about 303.3722184448.

27920772 divided by its sum of digits (36) gives a palindrome (775577).

The spelling of 27920772 in words is "twenty-seven million, nine hundred twenty thousand, seven hundred seventy-two".