7890436 has 24 divisors (see below), whose sum is σ = 14394240. Its totient is φ = 3780000.

The previous prime is 7890427. The next prime is 7890437. The reversal of 7890436 is 6340987.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7890395 and 7890404.

It is not an unprimeable number, because it can be changed into a prime (7890437) 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, 28981 + ... + 29251.

It is an arithmetic number, because the mean of its divisors is an integer number (599760).

Almost surely, 2^7890436 is an apocalyptic number.

It is an amenable number.

7890436 is a deficient number, since it is larger than the sum of its proper divisors (6503804).

7890436 is a wasteful number, since it uses less digits than its factorization.

7890436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555 (or 553 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 7890436 is about 2808.9919900206. The cubic root of 7890436 is about 199.0827665110.

The spelling of 7890436 in words is "seven million, eight hundred ninety thousand, four hundred thirty-six".