2152378 has 8 divisors (see below), whose sum is σ = 3240468. Its totient is φ = 1072224.

The previous prime is 2152373. The next prime is 2152393. The reversal of 2152378 is 8732512.

It can be written as a sum of positive squares in 2 ways, for example, as 2152089 + 289 = 1467^2 + 17^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 2¹⁵ + 1 + 5⁹ + 2¹⁷ + 3⁵ + 7⁴ + 8⁵ .

It is not an unprimeable number, because it can be changed into a prime (2152373) 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, 1251 + ... + 2422.

2^2152378 is an apocalyptic number.

2152378 is a deficient number, since it is larger than the sum of its proper divisors (1088090).

2152378 is a wasteful number, since it uses less digits than its factorization.

2152378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3968.

The product of its digits is 3360, while the sum is 28.

The square root of 2152378 is about 1467.0984970342. The cubic root of 2152378 is about 129.1138549739.

The spelling of 2152378 in words is "two million, one hundred fifty-two thousand, three hundred seventy-eight".