2478172 has 6 divisors (see below), whose sum is σ = 4336808. Its totient is φ = 1239084.

The previous prime is 2478101. The next prime is 2478173. The reversal of 2478172 is 2718742.

It is a super-3 number, since 3×2478172³ = 45657864185029633344, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2478173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309768 + ... + 309775.

2^2478172 is an apocalyptic number.

It is an amenable number.

2478172 is a deficient number, since it is larger than the sum of its proper divisors (1858636).

2478172 is a wasteful number, since it uses less digits than its factorization.

2478172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619547 (or 619545 counting only the distinct ones).

The product of its digits is 6272, while the sum is 31.

The square root of 2478172 is about 1574.2210772315. The cubic root of 2478172 is about 135.3247235551.

The spelling of 2478172 in words is "two million, four hundred seventy-eight thousand, one hundred seventy-two".