200781045 has 32 divisors (see below), whose sum is σ = 357661440. Its totient is φ = 106868160.

The previous prime is 200781043. The next prime is 200781047. The reversal of 200781045 is 540187002.

It is an interprime number because it is at equal distance from previous prime (200781043) and next prime (200781047).

It is not a de Polignac number, because 200781045 - 2¹ = 200781043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200781043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84007 + ... + 86363.

It is an arithmetic number, because the mean of its divisors is an integer number (11176920).

Almost surely, 2^200781045 is an apocalyptic number.

It is an amenable number.

200781045 is a deficient number, since it is larger than the sum of its proper divisors (156880395).

200781045 is a wasteful number, since it uses less digits than its factorization.

200781045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3002 (or 2996 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 200781045 is about 14169.7228272115. The cubic root of 200781045 is about 585.5638219638.

The spelling of 200781045 in words is "two hundred million, seven hundred eighty-one thousand, forty-five".