202740890 has 16 divisors (see below), whose sum is σ = 398109600. Its totient is φ = 73723920.

The previous prime is 202740877. The next prime is 202740907. The reversal of 202740890 is 98047202.

It is a super-2 number, since 2×202740890² = 82207736955984200, which contains 22 as substring.

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, 921440 + ... + 921659.

It is an arithmetic number, because the mean of its divisors is an integer number (24881850).

Almost surely, 2^202740890 is an apocalyptic number.

202740890 is a deficient number, since it is larger than the sum of its proper divisors (195368710).

202740890 is a wasteful number, since it uses less digits than its factorization.

202740890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843117.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 202740890 is about 14238.7109669380. The cubic root of 202740890 is about 587.4629063648.

The spelling of 202740890 in words is "two hundred two million, seven hundred forty thousand, eight hundred ninety".