45222940 has 48 divisors (see below), whose sum is σ = 109089792. Its totient is φ = 15425856.

The previous prime is 45222937. The next prime is 45222973. The reversal of 45222940 is 4922254.

It is a super-2 number, since 2×45222940² = 4090228604487200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 45222899 and 45222908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31069 + ... + 32491.

It is an arithmetic number, because the mean of its divisors is an integer number (2272704).

Almost surely, 2^45222940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45222940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54544896).

45222940 is an abundant number, since it is smaller than the sum of its proper divisors (63866852).

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

45222940 is a wasteful number, since it uses less digits than its factorization.

45222940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666 (or 1664 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 45222940 is about 6724.8003687842. The cubic root of 45222940 is about 356.2757510882.

The spelling of 45222940 in words is "forty-five million, two hundred twenty-two thousand, nine hundred forty".