1538380 has 12 divisors (see below), whose sum is σ = 3230640. Its totient is φ = 615344.

The previous prime is 1538353. The next prime is 1538389. The reversal of 1538380 is 838351.

It is a super-2 number, since 2×1538380² = 4733226048800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1538389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38440 + ... + 38479.

It is an arithmetic number, because the mean of its divisors is an integer number (269220).

2^1538380 is an apocalyptic number.

1538380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1538380 is an abundant number, since it is smaller than the sum of its proper divisors (1692260).

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

1538380 is a wasteful number, since it uses less digits than its factorization.

1538380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76928 (or 76926 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1538380 is about 1240.3144762519. The cubic root of 1538380 is about 115.4395278227.

The spelling of 1538380 in words is "one million, five hundred thirty-eight thousand, three hundred eighty".