401320264 has 8 divisors (see below), whose sum is σ = 752475510. Its totient is φ = 200660128.

The previous prime is 401320243. The next prime is 401320267. The reversal of 401320264 is 462023104.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 377991364 + 23328900 = 19442^2 + 4830^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×401320264² = 322115908594059392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401320267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25082509 + ... + 25082524.

Almost surely, 2^401320264 is an apocalyptic number.

It is an amenable number.

401320264 is a deficient number, since it is larger than the sum of its proper divisors (351155246).

401320264 is a wasteful number, since it uses less digits than its factorization.

401320264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50165039 (or 50165035 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 401320264 is about 20032.9794089646. The cubic root of 401320264 is about 737.6160584948.

Adding to 401320264 its reverse (462023104), we get a palindrome (863343368).

The spelling of 401320264 in words is "four hundred one million, three hundred twenty thousand, two hundred sixty-four".