361490640 has 240 divisors, whose sum is σ = 1328218560. Its totient is φ = 81070080.

The previous prime is 361490627. The next prime is 361490651. The reversal of 361490640 is 46094163.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 693580 + ... + 694100.

It is an arithmetic number, because the mean of its divisors is an integer number (5534244).

Almost surely, 2^361490640 is an apocalyptic number.

361490640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 361490640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (664109280).

361490640 is an abundant number, since it is smaller than the sum of its proper divisors (966727920).

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

361490640 is a wasteful number, since it uses less digits than its factorization.

361490640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 361490640 is about 19012.9071948506. The cubic root of 361490640 is about 712.3591694572.

The spelling of 361490640 in words is "three hundred sixty-one million, four hundred ninety thousand, six hundred forty".