1451380 has 36 divisors (see below), whose sum is σ = 3547908. Its totient is φ = 497280.

The previous prime is 1451371. The next prime is 1451383. The reversal of 1451380 is 831541.

It can be written as a sum of positive squares in 2 ways, for example, as 571536 + 879844 = 756^2 + 938^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1451383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 240 + ... + 1720.

It is an arithmetic number, because the mean of its divisors is an integer number (98553).

2^1451380 is an apocalyptic number.

1451380 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 1451380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1773954).

1451380 is an abundant number, since it is smaller than the sum of its proper divisors (2096528).

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

1451380 is a wasteful number, since it uses less digits than its factorization.

1451380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504 (or 1495 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1451380 is about 1204.7323354173. The cubic root of 1451380 is about 113.2210152146.

The spelling of 1451380 in words is "one million, four hundred fifty-one thousand, three hundred eighty".