266402628 has 24 divisors (see below), whose sum is σ = 690673760. Its totient is φ = 88800840.

The previous prime is 266402621. The next prime is 266402651. The reversal of 266402628 is 826204662.

266402628 is a `hidden beast` number, since 2 + 6 + 640 + 2 + 6 + 2 + 8 = 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 = 266402592 and 266402601.

It is not an unprimeable number, because it can be changed into a prime (266402621) 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, 1233238 + ... + 1233453.

Almost surely, 2^266402628 is an apocalyptic number.

It is an amenable number.

266402628 is an abundant number, since it is smaller than the sum of its proper divisors (424271132).

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

266402628 is a wasteful number, since it uses less digits than its factorization.

266402628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2466704 (or 2466696 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 266402628 is about 16321.8451162851. The cubic root of 266402628 is about 643.4470808086.

The spelling of 266402628 in words is "two hundred sixty-six million, four hundred two thousand, six hundred twenty-eight".