7920250 has 32 divisors (see below), whose sum is σ = 15973776. Its totient is φ = 2923200.

The previous prime is 7920233. The next prime is 7920251. The reversal of 7920250 is 520297.

It can be written as a sum of positive squares in 8 ways, for example, as 505521 + 7414729 = 711^2 + 2723^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (7920251) 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, 2032 + ... + 4468.

Almost surely, 2^7920250 is an apocalyptic number.

7920250 is an abundant number, since it is smaller than the sum of its proper divisors (8053526).

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

7920250 is a wasteful number, since it uses less digits than its factorization.

7920250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2467 (or 2457 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 7920250 is about 2814.2938723595. The cubic root of 7920250 is about 199.3331959995. Note that the first 3 decimals are identical.

It can be divided in two parts, 79202 and 50, that multiplied together give a square (3960100 = 1990²).

The spelling of 7920250 in words is "seven million, nine hundred twenty thousand, two hundred fifty".