801227640 has 64 divisors (see below), whose sum is σ = 2407226400. Its totient is φ = 213345792.

The previous prime is 801227639. The next prime is 801227653. The reversal of 801227640 is 46722108.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 801227598 and 801227607.

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, 83406 + ... + 92514.

Almost surely, 2^801227640 is an apocalyptic number.

It is an amenable number.

801227640 is an abundant number, since it is smaller than the sum of its proper divisors (1605998760).

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

801227640 is a wasteful number, since it uses less digits than its factorization.

801227640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9856 (or 9852 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 801227640 is about 28305.9647424355. The cubic root of 801227640 is about 928.7923740454.

Adding to 801227640 its reverse (46722108), we get a palindrome (847949748).

The spelling of 801227640 in words is "eight hundred one million, two hundred twenty-seven thousand, six hundred forty".