401724516 has 12 divisors (see below), whose sum is σ = 937357232. Its totient is φ = 133908168.

The previous prime is 401724481. The next prime is 401724517. The reversal of 401724516 is 615427104.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×401724516² = 322765173510868512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401724517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16738510 + ... + 16738533.

Almost surely, 2^401724516 is an apocalyptic number.

It is an amenable number.

401724516 is an abundant number, since it is smaller than the sum of its proper divisors (535632716).

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

401724516 is a wasteful number, since it uses less digits than its factorization.

401724516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33477050 (or 33477048 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 401724516 is about 20043.0665318459. The cubic root of 401724516 is about 737.8636435528.

The spelling of 401724516 in words is "four hundred one million, seven hundred twenty-four thousand, five hundred sixteen".