400211802 has 24 divisors (see below), whose sum is σ = 867784320. Its totient is φ = 133302600.

The previous prime is 400211797. The next prime is 400211813. The reversal of 400211802 is 208112004.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18177 + ... + 33627.

It is an arithmetic number, because the mean of its divisors is an integer number (36157680).

Almost surely, 2^400211802 is an apocalyptic number.

400211802 is an abundant number, since it is smaller than the sum of its proper divisors (467572518).

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

400211802 is a wasteful number, since it uses less digits than its factorization.

400211802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16898 (or 16895 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 400211802 is about 20005.2943492467. The cubic root of 400211802 is about 736.9363243211.

Adding to 400211802 its reverse (208112004), we get a palindrome (608323806).

The spelling of 400211802 in words is "four hundred million, two hundred eleven thousand, eight hundred two".