402020010 has 160 divisors (see below), whose sum is σ = 1261497600. Its totient is φ = 91826784.

The previous prime is 402019949. The next prime is 402020023. The reversal of 402020010 is 10020204.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 402019974 and 402020001.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 277107 + ... + 278553.

It is an arithmetic number, because the mean of its divisors is an integer number (7884360).

Almost surely, 2^402020010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402020010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (630748800).

402020010 is an abundant number, since it is smaller than the sum of its proper divisors (859477590).

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

402020010 is a wasteful number, since it uses less digits than its factorization.

402020010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487 (or 1464 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 402020010 is about 20050.4366535993. The cubic root of 402020010 is about 738.0445144674.

Adding to 402020010 its reverse (10020204), we get a palindrome (412040214).

The spelling of 402020010 in words is "four hundred two million, twenty thousand, ten".