7628390 has 32 divisors (see below), whose sum is σ = 17121024. Its totient is φ = 2377440.

The previous prime is 7628389. The next prime is 7628399. The reversal of 7628390 is 938267.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 7628390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7628399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4184 + ... + 5723.

It is an arithmetic number, because the mean of its divisors is an integer number (535032).

Almost surely, 2^7628390 is an apocalyptic number.

7628390 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

7628390 is an abundant number, since it is smaller than the sum of its proper divisors (9492634).

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

7628390 is a wasteful number, since it uses less digits than its factorization.

7628390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9932.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 7628390 is about 2761.9540184442. The cubic root of 7628390 is about 196.8540236323.

The spelling of 7628390 in words is "seven million, six hundred twenty-eight thousand, three hundred ninety".