1535420 has 12 divisors (see below), whose sum is σ = 3224424. Its totient is φ = 614160.

The previous prime is 1535393. The next prime is 1535441. The reversal of 1535420 is 245351.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 76771 = 1535420 / (1 + 5 + 3 + 5 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1535392 and 1535401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38366 + ... + 38405.

It is an arithmetic number, because the mean of its divisors is an integer number (268702).

2^1535420 is an apocalyptic number.

1535420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1535420 is an abundant number, since it is smaller than the sum of its proper divisors (1689004).

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

1535420 is a wasteful number, since it uses less digits than its factorization.

1535420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76780 (or 76778 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 1535420 is about 1239.1206559492. The cubic root of 1535420 is about 115.3654411443.

The spelling of 1535420 in words is "one million, five hundred thirty-five thousand, four hundred twenty".