266477040 has 400 divisors, whose sum is σ = 1020872160. Its totient is φ = 64143360.

The previous prime is 266476967. The next prime is 266477041. The reversal of 266477040 is 40774662.

266477040 is a `hidden beast` number, since 2 + 6 + 647 + 7 + 0 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 266476986 and 266477004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266477041) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4516531 + ... + 4516589.

Almost surely, 2^266477040 is an apocalyptic number.

266477040 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 266477040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (510436080).

266477040 is an abundant number, since it is smaller than the sum of its proper divisors (754395120).

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

266477040 is a wasteful number, since it uses less digits than its factorization.

266477040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 266477040 is about 16324.1244788197. The cubic root of 266477040 is about 643.5069847808.

The spelling of 266477040 in words is "two hundred sixty-six million, four hundred seventy-seven thousand, forty".