880121772 has 36 divisors (see below), whose sum is σ = 2321482800. Its totient is φ = 280618272.

The previous prime is 880121761. The next prime is 880121779. The reversal of 880121772 is 277121088.

It is a happy number.

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

It is a super-3 number, since 3×880121772³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 (880121779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 530647 + ... + 532302.

Almost surely, 2^880121772 is an apocalyptic number.

It is an amenable number.

880121772 is an abundant number, since it is smaller than the sum of its proper divisors (1441361028).

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

880121772 is a wasteful number, since it uses less digits than its factorization.

880121772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062982 (or 1062977 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The square root of 880121772 is about 29666.8463440252. The cubic root of 880121772 is about 958.3281709480.

The spelling of 880121772 in words is "eight hundred eighty million, one hundred twenty-one thousand, seven hundred seventy-two".