1946640 has 40 divisors (see below), whose sum is σ = 6035328. Its totient is φ = 519040.

The previous prime is 1946629. The next prime is 1946641. The reversal of 1946640 is 466491.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1946598 and 1946607.

It is not an unprimeable number, because it can be changed into a prime (1946641) 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, 3816 + ... + 4295.

2^1946640 is an apocalyptic number.

1946640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1946640 is an abundant number, since it is smaller than the sum of its proper divisors (4088688).

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

1946640 is a wasteful number, since it uses less digits than its factorization.

1946640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8127 (or 8121 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1946640 is about 1395.2204126947. The cubic root of 1946640 is about 124.8614999319.

The spelling of 1946640 in words is "one million, nine hundred forty-six thousand, six hundred forty".