400598016 has 176 divisors, whose sum is σ = 1315058304. Its totient is φ = 105578496.

The previous prime is 400597993. The next prime is 400598053. The reversal of 400598016 is 610895004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 278836 + ... + 280268.

Almost surely, 2^400598016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400598016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (657529152).

400598016 is an abundant number, since it is smaller than the sum of its proper divisors (914460288).

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

400598016 is a wasteful number, since it uses less digits than its factorization.

400598016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476 (or 1458 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 400598016 is about 20014.9448163116. The cubic root of 400598016 is about 737.1733018580.

The spelling of 400598016 in words is "four hundred million, five hundred ninety-eight thousand, sixteen".