22273500 has 96 divisors (see below), whose sum is σ = 67092480. Its totient is φ = 5736000.

The previous prime is 22273487. The next prime is 22273513. The reversal of 22273500 is 537222.

It is an interprime number because it is at equal distance from previous prime (22273487) and next prime (22273513).

It is a super-2 number, since 2×22273500² = 992217604500000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46261 + ... + 46739.

It is an arithmetic number, because the mean of its divisors is an integer number (698880).

Almost surely, 2^22273500 is an apocalyptic number.

22273500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22273500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33546240).

22273500 is an abundant number, since it is smaller than the sum of its proper divisors (44818980).

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

22273500 is a wasteful number, since it uses less digits than its factorization.

22273500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532 (or 520 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 22273500 is about 4719.4809036588. The cubic root of 22273500 is about 281.3603024143.

The spelling of 22273500 in words is "twenty-two million, two hundred seventy-three thousand, five hundred".