266400156 has 24 divisors (see below), whose sum is σ = 678109824. Its totient is φ = 80727280.

The previous prime is 266400139. The next prime is 266400157. The reversal of 266400156 is 651004662.

266400156 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266400157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1008960 + ... + 1009223.

It is an arithmetic number, because the mean of its divisors is an integer number (28254576).

Almost surely, 2^266400156 is an apocalyptic number.

It is an amenable number.

266400156 is an abundant number, since it is smaller than the sum of its proper divisors (411709668).

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

266400156 is a wasteful number, since it uses less digits than its factorization.

266400156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018201 (or 2018199 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 266400156 is about 16321.7693893769. The cubic root of 266400156 is about 643.4450905804.

The spelling of 266400156 in words is "two hundred sixty-six million, four hundred thousand, one hundred fifty-six".