1401504 has 48 divisors (see below), whose sum is σ = 3965472. Its totient is φ = 430848.

The previous prime is 1401487. The next prime is 1401511. The reversal of 1401504 is 4051041.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687 + ... + 1809.

It is an arithmetic number, because the mean of its divisors is an integer number (82614).

2^1401504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1401504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1982736).

1401504 is an abundant number, since it is smaller than the sum of its proper divisors (2563968).

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

1401504 is a wasteful number, since it uses less digits than its factorization.

1401504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149 (or 1141 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1401504 is about 1183.8513420189. The cubic root of 1401504 is about 111.9089395898.

Adding to 1401504 its reverse (4051041), we get a palindrome (5452545).

The spelling of 1401504 in words is "one million, four hundred one thousand, five hundred four".