361401840 has 60 divisors (see below), whose sum is σ = 1213710264. Its totient is φ = 96373632.

The previous prime is 361401797. The next prime is 361401841. The reversal of 361401840 is 48104163.

361401840 is a `hidden beast` number, since 3 + 614 + 0 + 1 + 8 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×361401840² = 261222579910771200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361401841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250254 + ... + 251693.

Almost surely, 2^361401840 is an apocalyptic number.

361401840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

361401840 is an abundant number, since it is smaller than the sum of its proper divisors (852308424).

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

361401840 is a wasteful number, since it uses less digits than its factorization.

361401840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501966 (or 501957 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 361401840 is about 19010.5717957141. The cubic root of 361401840 is about 712.3008344524.

The spelling of 361401840 in words is "three hundred sixty-one million, four hundred one thousand, eight hundred forty".