1901040 has 60 divisors (see below), whose sum is σ = 5960184. Its totient is φ = 501248.

The previous prime is 1901033. The next prime is 1901087. The reversal of 1901040 is 401091.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×1901040² = 7227906163200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21316 + ... + 21404.

2^1901040 is an apocalyptic number.

1901040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1901040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2980092).

1901040 is an abundant number, since it is smaller than the sum of its proper divisors (4059144).

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

1901040 is an equidigital number, since it uses as much as digits as its factorization.

1901040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1901040 is about 1378.7820712498. The cubic root of 1901040 is about 123.8788271713.

Multiplying 1901040 by its sum of digits (15), we get a square (28515600 = 5340²).

1901040 divided by its sum of digits (15) gives a square (126736 = 356²).

The spelling of 1901040 in words is "one million, nine hundred one thousand, forty".