400701380 has 24 divisors (see below), whose sum is σ = 853003032. Its totient is φ = 158084352.

The previous prime is 400701361. The next prime is 400701401. The reversal of 400701380 is 83107004.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 25969216 + 374732164 = 5096^2 + 19358^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135767 + ... + 138686.

It is an arithmetic number, because the mean of its divisors is an integer number (35541793).

Almost surely, 2^400701380 is an apocalyptic number.

It is an amenable number.

400701380 is an abundant number, since it is smaller than the sum of its proper divisors (452301652).

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

400701380 is a wasteful number, since it uses less digits than its factorization.

400701380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274535 (or 274533 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 400701380 is about 20017.5268202643. The cubic root of 400701380 is about 737.2366992667.

Adding to 400701380 its reverse (83107004), we get a palindrome (483808384).

The spelling of 400701380 in words is "four hundred million, seven hundred one thousand, three hundred eighty".