401558000 has 40 divisors (see below), whose sum is σ = 970972080. Its totient is φ = 160622400.

The previous prime is 401557997. The next prime is 401558009. The reversal of 401558000 is 855104.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×401558000² = 322497654728000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401558009) 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, 98390 + ... + 102389.

It is an arithmetic number, because the mean of its divisors is an integer number (24274302).

Almost surely, 2^401558000 is an apocalyptic number.

401558000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401558000 is an abundant number, since it is smaller than the sum of its proper divisors (569414080).

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

401558000 is a wasteful number, since it uses less digits than its factorization.

401558000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200802 (or 200786 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 401558000 is about 20038.9121461221. The cubic root of 401558000 is about 737.7616805760.

The spelling of 401558000 in words is "four hundred one million, five hundred fifty-eight thousand".