22380649 has 4 divisors (see below), whose sum is σ = 22426000. Its totient is φ = 22335300.

The previous prime is 22380641. The next prime is 22380703. The reversal of 22380649 is 94608322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22380649 - 2³ = 22380641 is a prime.

It is a super-2 number, since 2×22380649² = 1001786899322402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22380641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21927 + ... + 22924.

It is an arithmetic number, because the mean of its divisors is an integer number (5606500).

Almost surely, 2^22380649 is an apocalyptic number.

It is an amenable number.

22380649 is a deficient number, since it is larger than the sum of its proper divisors (45351).

22380649 is an equidigital number, since it uses as much as digits as its factorization.

22380649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45350.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 22380649 is about 4730.8190622766. The cubic root of 22380649 is about 281.8107519215.

It can be divided in two parts, 22 and 380649, that multiplied together give a triangular number (8374278 = T₄₀₉₂).

The spelling of 22380649 in words is "twenty-two million, three hundred eighty thousand, six hundred forty-nine".