11398540 has 12 divisors (see below), whose sum is σ = 23936976. Its totient is φ = 4559408.

The previous prime is 11398523. The next prime is 11398559. The reversal of 11398540 is 4589311.

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, 284944 + ... + 284983.

It is an arithmetic number, because the mean of its divisors is an integer number (1994748).

Almost surely, 2^11398540 is an apocalyptic number.

11398540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11398540 is an abundant number, since it is smaller than the sum of its proper divisors (12538436).

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

11398540 is a wasteful number, since it uses less digits than its factorization.

11398540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569936 (or 569934 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 11398540 is about 3376.1723889636. The cubic root of 11398540 is about 225.0521031599.

The spelling of 11398540 in words is "eleven million, three hundred ninety-eight thousand, five hundred forty".