400001602 has 192 divisors, whose sum is σ = 918376704. Its totient is φ = 127733760.

The previous prime is 400001543. The next prime is 400001603. The reversal of 400001602 is 206100004.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (400001603) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5479438 + ... + 5479510.

It is an arithmetic number, because the mean of its divisors is an integer number (4783212).

Almost surely, 2^400001602 is an apocalyptic number.

400001602 is an abundant number, since it is smaller than the sum of its proper divisors (518375102).

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

400001602 is a wasteful number, since it uses less digits than its factorization.

400001602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 400001602 is about 20000.0400499599. The cubic root of 400001602 is about 736.8072833632.

Adding to 400001602 its reverse (206100004), we get a palindrome (606101606).

The spelling of 400001602 in words is "four hundred million, one thousand, six hundred two".