1955420 has 12 divisors (see below), whose sum is σ = 4106424. Its totient is φ = 782160.

The previous prime is 1955417. The next prime is 1955467. The reversal of 1955420 is 245591.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1955420.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48866 + ... + 48905.

It is an arithmetic number, because the mean of its divisors is an integer number (342202).

2^1955420 is an apocalyptic number.

1955420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1955420 is an abundant number, since it is smaller than the sum of its proper divisors (2151004).

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

1955420 is a wasteful number, since it uses less digits than its factorization.

1955420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97780 (or 97778 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1955420 is about 1398.3633290386. The cubic root of 1955420 is about 125.0489408359.

The spelling of 1955420 in words is "one million, nine hundred fifty-five thousand, four hundred twenty".