401011500 has 48 divisors (see below), whose sum is σ = 1167749856. Its totient is φ = 106936000.

The previous prime is 401011477. The next prime is 401011519. The reversal of 401011500 is 5110104.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 132171 + ... + 135170.

It is an arithmetic number, because the mean of its divisors is an integer number (24328122).

Almost surely, 2^401011500 is an apocalyptic number.

It is an amenable number.

401011500 is an abundant number, since it is smaller than the sum of its proper divisors (766738356).

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

401011500 is a wasteful number, since it uses less digits than its factorization.

401011500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267363 (or 267351 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 401011500 is about 20025.2715337396. The cubic root of 401011500 is about 737.4268432653.

Adding to 401011500 its reverse (5110104), we get a palindrome (406121604).

The spelling of 401011500 in words is "four hundred one million, eleven thousand, five hundred".