207211940 has 24 divisors (see below), whose sum is σ = 468618360. Its totient is φ = 76508928.

The previous prime is 207211933. The next prime is 207211973. The reversal of 207211940 is 49112702.

207211940 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 7441984 + 199769956 = 2728^2 + 14134^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 398225 + ... + 398744.

It is an arithmetic number, because the mean of its divisors is an integer number (19525765).

Almost surely, 2^207211940 is an apocalyptic number.

207211940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

207211940 is an abundant number, since it is smaller than the sum of its proper divisors (261406420).

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

207211940 is a wasteful number, since it uses less digits than its factorization.

207211940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796991 (or 796989 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 207211940 is about 14394.8581097557. The cubic root of 207211940 is about 591.7499895437.

The spelling of 207211940 in words is "two hundred seven million, two hundred eleven thousand, nine hundred forty".