401521326 has 16 divisors (see below), whose sum is σ = 808434000. Its totient is φ = 132941888.

The previous prime is 401521313. The next prime is 401521339. The reversal of 401521326 is 623125104.

It is an interprime number because it is at equal distance from previous prime (401521313) and next prime (401521339).

It is a super-2 number, since 2×401521326² = 322438750465596552, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401521296 and 401521305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223671 + ... + 225458.

It is an arithmetic number, because the mean of its divisors is an integer number (50527125).

Almost surely, 2^401521326 is an apocalyptic number.

401521326 is an abundant number, since it is smaller than the sum of its proper divisors (406912674).

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

401521326 is a wasteful number, since it uses less digits than its factorization.

401521326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449283.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 401521326 is about 20037.9970555942. The cubic root of 401521326 is about 737.7392201463.

The spelling of 401521326 in words is "four hundred one million, five hundred twenty-one thousand, three hundred twenty-six".