45978822 has 48 divisors (see below), whose sum is σ = 105496560. Its totient is φ = 14432256.

The previous prime is 45978791. The next prime is 45978839. The reversal of 45978822 is 22887954.

It is a super-2 number, since 2×45978822² = 4228104145015368, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79398 + ... + 79974.

It is an arithmetic number, because the mean of its divisors is an integer number (2197845).

Almost surely, 2^45978822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45978822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52748280).

45978822 is an abundant number, since it is smaller than the sum of its proper divisors (59517738).

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

45978822 is a wasteful number, since it uses less digits than its factorization.

45978822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837 (or 834 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 45978822 is about 6780.7685405122. The cubic root of 45978822 is about 358.2497918582.

The spelling of 45978822 in words is "forty-five million, nine hundred seventy-eight thousand, eight hundred twenty-two".