1491380 has 24 divisors (see below), whose sum is σ = 3417120. Its totient is φ = 542240.

The previous prime is 1491377. The next prime is 1491401. The reversal of 1491380 is 831941.

It is a congruent number.

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, 3170 + ... + 3609.

It is an arithmetic number, because the mean of its divisors is an integer number (142380).

2^1491380 is an apocalyptic number.

1491380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1491380 is an abundant number, since it is smaller than the sum of its proper divisors (1925740).

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

1491380 is a wasteful number, since it uses less digits than its factorization.

1491380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6799 (or 6797 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1491380 is about 1221.2207007744. The cubic root of 1491380 is about 114.2517265004.

It can be divided in two parts, 1491 and 380, that multiplied together give a triangular number (566580 = T₁₀₆₄).

The spelling of 1491380 in words is "one million, four hundred ninety-one thousand, three hundred eighty".