1401680 has 40 divisors (see below), whose sum is σ = 3725952. Its totient is φ = 480384.

The previous prime is 1401679. The next prime is 1401683. The reversal of 1401680 is 861041.

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 (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401683) 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, 692 + ... + 1811.

2^1401680 is an apocalyptic number.

1401680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401680 is an abundant number, since it is smaller than the sum of its proper divisors (2324272).

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

1401680 is a wasteful number, since it uses less digits than its factorization.

1401680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2523 (or 2517 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 1401680 is about 1183.9256733427. The cubic root of 1401680 is about 111.9136238787.

The spelling of 1401680 in words is "one million, four hundred one thousand, six hundred eighty".