1956390 has 16 divisors (see below), whose sum is σ = 4695408. Its totient is φ = 521696.

The previous prime is 1956359. The next prime is 1956391. The reversal of 1956390 is 936591.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1956391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32577 + ... + 32636.

It is an arithmetic number, because the mean of its divisors is an integer number (293463).

2^1956390 is an apocalyptic number.

1956390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1956390 is an abundant number, since it is smaller than the sum of its proper divisors (2739018).

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

1956390 is a wasteful number, since it uses less digits than its factorization.

1956390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65223.

The product of its (nonzero) digits is 7290, while the sum is 33.

The square root of 1956390 is about 1398.7101200749. The cubic root of 1956390 is about 125.0696145566.

It can be divided in two parts, 1956 and 390, that added together give a triangular number (2346 = T₆₈).

The spelling of 1956390 in words is "one million, nine hundred fifty-six thousand, three hundred ninety".