7738945 has 8 divisors (see below), whose sum is σ = 9302400. Its totient is φ = 6180720.

The previous prime is 7738943. The next prime is 7738967. The reversal of 7738945 is 5498377.

It is a happy number.

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

It is not a de Polignac number, because 7738945 - 2¹ = 7738943 is a prime.

It is a d-powerful number, because it can be written as 7⁵ + 7⁸ + 3³ + 8 + 9² + 4⁶ + 5⁹ .

It is not an unprimeable number, because it can be changed into a prime (7738943) 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, 3706 + ... + 5404.

It is an arithmetic number, because the mean of its divisors is an integer number (1162800).

Almost surely, 2^7738945 is an apocalyptic number.

It is an amenable number.

7738945 is a deficient number, since it is larger than the sum of its proper divisors (1563455).

7738945 is a wasteful number, since it uses less digits than its factorization.

7738945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615.

The product of its digits is 211680, while the sum is 43.

The square root of 7738945 is about 2781.8959362277. The cubic root of 7738945 is about 197.8004400264.

The spelling of 7738945 in words is "seven million, seven hundred thirty-eight thousand, nine hundred forty-five".