2647942 has 16 divisors (see below), whose sum is σ = 4451472. Its totient is φ = 1170720.

The previous prime is 2647919. The next prime is 2647943. The reversal of 2647942 is 2497462.

It is a d-powerful number, because it can be written as 2⁹ + 6² + 4² + 7⁴ + 9⁶ + 4⁷ + 2²¹ .

It is a junction number, because it is equal to n+sod(n) for n = 2647898 and 2647907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2647943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 813 + ... + 2440.

It is an arithmetic number, because the mean of its divisors is an integer number (278217).

2^2647942 is an apocalyptic number.

2647942 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2647942 is the 814-th decagonal number.

2647942 is a deficient number, since it is larger than the sum of its proper divisors (1803530).

2647942 is a wasteful number, since it uses less digits than its factorization.

2647942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3303.

The product of its digits is 24192, while the sum is 34.

The square root of 2647942 is about 1627.2498271624. The cubic root of 2647942 is about 138.3469182317.

The spelling of 2647942 in words is "two million, six hundred forty-seven thousand, nine hundred forty-two".