1071920 has 20 divisors (see below), whose sum is σ = 2492400. Its totient is φ = 428736.

The previous prime is 1071919. The next prime is 1071937. The reversal of 1071920 is 291701.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×1071920² = 2298024972800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1071892 and 1071901.

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, 6620 + ... + 6779.

It is an arithmetic number, because the mean of its divisors is an integer number (124620).

2^1071920 is an apocalyptic number.

1071920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1071920 is an abundant number, since it is smaller than the sum of its proper divisors (1420480).

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

1071920 is a wasteful number, since it uses less digits than its factorization.

1071920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13412 (or 13406 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 1071920 is about 1035.3356943523. The cubic root of 1071920 is about 102.3420529894.

It can be divided in two parts, 1071 and 920, that added together give a palindrome (1991).

The spelling of 1071920 in words is "one million, seventy-one thousand, nine hundred twenty".