7772250 has 64 divisors (see below), whose sum is σ = 19933056. Its totient is φ = 2016000.

The previous prime is 7772221. The next prime is 7772251. The reversal of 7772250 is 522777.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (7772251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32130 + ... + 32370.

It is an arithmetic number, because the mean of its divisors is an integer number (311454).

Almost surely, 2^7772250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7772250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9966528).

7772250 is an abundant number, since it is smaller than the sum of its proper divisors (12160806).

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

7772250 is a wasteful number, since it uses less digits than its factorization.

7772250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 6860, while the sum is 30.

The square root of 7772250 is about 2787.8755352418. The cubic root of 7772250 is about 198.0837825207.

It can be divided in two parts, 77 and 72250, that added together give a palindrome (72327).

The spelling of 7772250 in words is "seven million, seven hundred seventy-two thousand, two hundred fifty".