1901004 has 72 divisors (see below), whose sum is σ = 5343408. Its totient is φ = 524160.

The previous prime is 1900981. The next prime is 1901021. The reversal of 1901004 is 4001091.

It is a super-2 number, since 2×1901004² = 7227632416032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31134 + ... + 31194.

It is an arithmetic number, because the mean of its divisors is an integer number (74214).

2^1901004 is an apocalyptic number.

1901004 is a gapful number since it is divisible by the number (14) 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 1901004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2671704).

1901004 is an abundant number, since it is smaller than the sum of its proper divisors (3442404).

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

1901004 is a wasteful number, since it uses less digits than its factorization.

1901004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 126 counting only the distinct ones).

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

The square root of 1901004 is about 1378.7690161880. The cubic root of 1901004 is about 123.8780452018.

Adding to 1901004 its reverse (4001091), we get a palindrome (5902095).

The spelling of 1901004 in words is "one million, nine hundred one thousand, four".