1901424 has 40 divisors (see below), whose sum is σ = 5614720. Its totient is φ = 543168.

The previous prime is 1901413. The next prime is 1901429. The reversal of 1901424 is 4241091.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1901424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1901429) 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, 2494 + ... + 3165.

It is an arithmetic number, because the mean of its divisors is an integer number (140368).

2^1901424 is an apocalyptic number.

1901424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1901424 is an abundant number, since it is smaller than the sum of its proper divisors (3713296).

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

1901424 is a wasteful number, since it uses less digits than its factorization.

1901424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5677 (or 5671 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1901424 is about 1378.9213175522. The cubic root of 1901424 is about 123.8871675652.

The spelling of 1901424 in words is "one million, nine hundred one thousand, four hundred twenty-four".