2158408 has 16 divisors (see below), whose sum is σ = 4625280. Its totient is φ = 925008.

The previous prime is 2158393. The next prime is 2158423. The reversal of 2158408 is 8048512.

It is an interprime number because it is at equal distance from previous prime (2158393) and next prime (2158423).

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 19216 + ... + 19327.

It is an arithmetic number, because the mean of its divisors is an integer number (289080).

2^2158408 is an apocalyptic number.

2158408 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2158408 is an abundant number, since it is smaller than the sum of its proper divisors (2466872).

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

2158408 is a wasteful number, since it uses less digits than its factorization.

2158408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38556 (or 38552 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 2158408 is about 1469.1521364379. The cubic root of 2158408 is about 129.2343156332.

The spelling of 2158408 in words is "two million, one hundred fifty-eight thousand, four hundred eight".