402411040 has 96 divisors (see below), whose sum is σ = 974768256. Its totient is φ = 156948480.

The previous prime is 402411019. The next prime is 402411041. The reversal of 402411040 is 40114204.

It is a super-2 number, since 2×402411040² = 323869290227763200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (402411041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1529949 + ... + 1530211.

It is an arithmetic number, because the mean of its divisors is an integer number (10153836).

Almost surely, 2^402411040 is an apocalyptic number.

402411040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402411040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (487384128).

402411040 is an abundant number, since it is smaller than the sum of its proper divisors (572357216).

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

402411040 is a wasteful number, since it uses less digits than its factorization.

402411040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482 (or 474 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 402411040 is about 20060.1854428118. The cubic root of 402411040 is about 738.2837264639.

Adding to 402411040 its reverse (40114204), we get a palindrome (442525244).

The spelling of 402411040 in words is "four hundred two million, four hundred eleven thousand, forty".