3729780 has 48 divisors (see below), whose sum is σ = 11605440. Its totient is φ = 994464.

The previous prime is 3729767. The next prime is 3729793. The reversal of 3729780 is 879273.

It is an interprime number because it is at equal distance from previous prime (3729767) and next prime (3729793).

It is a super-2 number, since 2×3729780² = 27822517696800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2914 + ... + 3993.

It is an arithmetic number, because the mean of its divisors is an integer number (241780).

Almost surely, 2^3729780 is an apocalyptic number.

3729780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3729780 is an abundant number, since it is smaller than the sum of its proper divisors (7875660).

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

3729780 is a wasteful number, since it uses less digits than its factorization.

3729780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6925 (or 6917 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 3729780 is about 1931.2638349019. The cubic root of 3729780 is about 155.0818852797.

The spelling of 3729780 in words is "three million, seven hundred twenty-nine thousand, seven hundred eighty".