7743420 has 36 divisors (see below), whose sum is σ = 23488920. Its totient is φ = 2064864.

The previous prime is 7743419. The next prime is 7743427. The reversal of 7743420 is 243477.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7743427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21330 + ... + 21689.

It is an arithmetic number, because the mean of its divisors is an integer number (652470).

Almost surely, 2^7743420 is an apocalyptic number.

It is an amenable number.

7743420 is an abundant number, since it is smaller than the sum of its proper divisors (15745500).

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

7743420 is a wasteful number, since it uses less digits than its factorization.

7743420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43034 (or 43029 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 7743420 is about 2782.7001275739. The cubic root of 7743420 is about 197.8385583320.

Adding to 7743420 its reverse (243477), we get a palindrome (7986897).

The spelling of 7743420 in words is "seven million, seven hundred forty-three thousand, four hundred twenty".