1187772 has 12 divisors (see below), whose sum is σ = 2771496. Its totient is φ = 395920.

The previous prime is 1187761. The next prime is 1187801. The reversal of 1187772 is 2777811.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49479 + ... + 49502.

It is an arithmetic number, because the mean of its divisors is an integer number (230958).

2^1187772 is an apocalyptic number.

1187772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1187772 is an abundant number, since it is smaller than the sum of its proper divisors (1583724).

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

1187772 is a wasteful number, since it uses less digits than its factorization.

1187772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98988 (or 98986 counting only the distinct ones).

The product of its digits is 5488, while the sum is 33.

The square root of 1187772 is about 1089.8495308986. The cubic root of 1187772 is about 105.9036742103.

The spelling of 1187772 in words is "one million, one hundred eighty-seven thousand, seven hundred seventy-two".