1920920 has 16 divisors (see below), whose sum is σ = 4322160. Its totient is φ = 768352.

The previous prime is 1920917. The next prime is 1920923. The reversal of 1920920 is 290291.

It is an interprime number because it is at equal distance from previous prime (1920917) and next prime (1920923).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23972 + ... + 24051.

It is an arithmetic number, because the mean of its divisors is an integer number (270135).

2^1920920 is an apocalyptic number.

1920920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1920920 is an abundant number, since it is smaller than the sum of its proper divisors (2401240).

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

1920920 is a wasteful number, since it uses less digits than its factorization.

1920920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48034 (or 48030 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1920920 is about 1385.9725827014. The cubic root of 1920920 is about 124.3091488315.

The spelling of 1920920 in words is "one million, nine hundred twenty thousand, nine hundred twenty".