133770740 has 12 divisors (see below), whose sum is σ = 280918596. Its totient is φ = 53508288.

The previous prime is 133770727. The next prime is 133770757. The reversal of 133770740 is 47077331.

It can be written as a sum of positive squares in 2 ways, for example, as 21325924 + 112444816 = 4618^2 + 10604^2 .

It is a super-2 number, since 2×133770740² = 35789221760295200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133770697 and 133770706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3344249 + ... + 3344288.

It is an arithmetic number, because the mean of its divisors is an integer number (23409883).

Almost surely, 2^133770740 is an apocalyptic number.

133770740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133770740 is an abundant number, since it is smaller than the sum of its proper divisors (147147856).

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

133770740 is a wasteful number, since it uses less digits than its factorization.

133770740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6688546 (or 6688544 counting only the distinct ones).

The product of its (nonzero) digits is 12348, while the sum is 32.

The square root of 133770740 is about 11565.9301398547. The cubic root of 133770740 is about 511.4309932397.

The spelling of 133770740 in words is "one hundred thirty-three million, seven hundred seventy thousand, seven hundred forty".