402000750 has 96 divisors (see below), whose sum is σ = 1092199680. Its totient is φ = 106689600.

The previous prime is 402000733. The next prime is 402000757. The reversal of 402000750 is 57000204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402000757) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 839011 + ... + 839489.

It is an arithmetic number, because the mean of its divisors is an integer number (11377080).

Almost surely, 2^402000750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402000750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (546099840).

402000750 is an abundant number, since it is smaller than the sum of its proper divisors (690198930).

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

402000750 is a wasteful number, since it uses less digits than its factorization.

402000750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875 (or 862 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 402000750 is about 20049.9563590547. The cubic root of 402000750 is about 738.0327281848.

Adding to 402000750 its reverse (57000204), we get a palindrome (459000954).

The spelling of 402000750 in words is "four hundred two million, seven hundred fifty", and thus it is an aban number.