197026090 has 16 divisors (see below), whose sum is σ = 375508872. Its totient is φ = 74174464.

The previous prime is 197026061. The next prime is 197026097. The reversal of 197026090 is 90620791.

It can be written as a sum of positive squares in 4 ways, for example, as 159289641 + 37736449 = 12621^2 + 6143^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (197026097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 579319 + ... + 579658.

Almost surely, 2^197026090 is an apocalyptic number.

197026090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197026090 is a deficient number, since it is larger than the sum of its proper divisors (178482782).

197026090 is a wasteful number, since it uses less digits than its factorization.

197026090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159001.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 197026090 is about 14036.5982346151. The cubic root of 197026090 is about 581.8904723371.

The spelling of 197026090 in words is "one hundred ninety-seven million, twenty-six thousand, ninety".