20770704 has 30 divisors (see below), whose sum is σ = 58129526. Its totient is φ = 6923520.

The previous prime is 20770703. The next prime is 20770709. The reversal of 20770704 is 40707702.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18662400 + 2108304 = 4320^2 + 1452^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20770703) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71977 + ... + 72264.

Almost surely, 2^20770704 is an apocalyptic number.

20770704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20770704 is an abundant number, since it is smaller than the sum of its proper divisors (37358822).

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

20770704 is a wasteful number, since it uses less digits than its factorization.

20770704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144255 (or 144246 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 27.

The square root of 20770704 is about 4557.4887822133. The cubic root of 20770704 is about 274.8845973085.

The spelling of 20770704 in words is "twenty million, seven hundred seventy thousand, seven hundred four".