20706354 has 20 divisors (see below), whose sum is σ = 46397934. Its totient is φ = 6902064.

The previous prime is 20706341. The next prime is 20706359. The reversal of 20706354 is 45360702.

It is a happy number.

20706354 is a `hidden beast` number, since 20 + 7 + 0 + 635 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19847025 + 859329 = 4455^2 + 927^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20706359) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 63747 + ... + 64070.

Almost surely, 2^20706354 is an apocalyptic number.

20706354 is an abundant number, since it is smaller than the sum of its proper divisors (25691580).

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

20706354 is a wasteful number, since it uses less digits than its factorization.

20706354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127831 (or 127822 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 20706354 is about 4550.4234967748. The cubic root of 20706354 is about 274.6004290770.

The spelling of 20706354 in words is "twenty million, seven hundred six thousand, three hundred fifty-four".