1534840 has 16 divisors (see below), whose sum is σ = 3453480. Its totient is φ = 613920.

The previous prime is 1534837. The next prime is 1534843. The reversal of 1534840 is 484351.

It is an interprime number because it is at equal distance from previous prime (1534837) and next prime (1534843).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1534843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19146 + ... + 19225.

2^1534840 is an apocalyptic number.

1534840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1534840 is an abundant number, since it is smaller than the sum of its proper divisors (1918640).

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

1534840 is a wasteful number, since it uses less digits than its factorization.

1534840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38382 (or 38378 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1534840 is about 1238.8865969087. The cubic root of 1534840 is about 115.3509130059.

The spelling of 1534840 in words is "one million, five hundred thirty-four thousand, eight hundred forty".